催泪瓦斯

同一义项的词语:催泪瓦斯

a tear gas that is stronger than CN gas but wears off faster; can be deployed by grenades or cluster bombs; can cause skin burns and fatal pulmonary edema

义项编号 14603798-n

1条概念或词汇关系

氯乙酰苯

同一义项的词语:氯乙酰苯

a tear gas that is weaker than CS gas but lasts longer

义项编号 14604038-n

1条概念或词汇关系

瓜氨酸

同一义项的词语:瓜氨酸

an amino acid that does not occur in proteins but is an intermediate in the conversion of ornithine to arginine

义项编号 14604286-n

1条概念或词汇关系

半胱氨酸

同一义项的词语:半胱氨酸

an amino acid containing sulfur that is found in most proteins; oxidizes on exposure to air to form cystine

义项编号 14604454-n

1条概念或词汇关系

双硫丙氨酸

同一义项的词语:双硫丙氨酸

a crystalline amino acid found in proteins (especially keratin); discovered in bladder stones

义项编号 14604616-n

1条概念或词汇关系

抗磁体

同一义项的词语:抗磁体

a substance that exhibits diamagnetism

义项编号 14604763-n

1条概念或词汇关系

二胺、联胺

同一义项的词语:二胺、联胺

any organic compound containing two amino groups

义项编号 14604857-n

1条概念或词汇关系

二羟基苯丙氨酸、二羟苯丙氨酸

同一义项的词语:二羟基苯丙氨酸、二羟苯丙氨酸

amino acid that is formed in the liver and converted into dopamine in the brain

义项编号 14604959-n

2条概念或词汇关系

左旋多巴

同一义项的词语:左旋多巴

the levorotatory form of dopa (trade names Bendopa and Brocadopa and Larodopa); as a drug it is used to treat Parkinson's disease

义项编号 14605132-n

1条概念或词汇关系

内切核酸酶、核酸内切酶

同一义项的词语:内切核酸酶、核酸内切酶

a nuclease that cleaves nucleic acids at interior bonds and so produces fragments of various sizes

义项编号 14605415-n

1条概念或词汇关系

烯醇

同一义项的词语:烯醇

an organic compound that contains a hydroxyl group bonded to a carbon atom which in turn is doubly bonded to another carbon atom

义项编号 14605590-n

2条概念或词汇关系

必需氨基酸

同一义项的词语:必需氨基酸

an amino acid that is required by animals but that they cannot synthesize; must be supplied in the diet

义项编号 14605787-n

3条概念或词汇关系

核酸外切酶

同一义项的词语:核酸外切酶

a nuclease that releases one nucleotide at a time (serially) beginning at one of a nucleic acid

义项编号 14606137-n

伽马氨基丁酸

同一义项的词语:伽马氨基丁酸

an amino acid that is found in the central nervous system; acts as an inhibitory neurotransmitter

义项编号 14606290-n

2条概念或词汇关系

谷氨酸

同一义项的词语:谷氨酸

an amino acid occurring in proteins; important in the nitrogen metabolism of plants; used in monosodium glutamate to enhance the flavor of meats

义项编号 14606482-n

1条概念或词汇关系

谷氨酸盐

同一义项的词语:谷氨酸盐

a crystalline amino acid occurring in proteins; important in protein metabolism

义项编号 14606704-n

1条概念或词汇关系

甘氨酸

同一义项的词语:甘氨酸

the simplest amino acid found in proteins and the principal amino acid in sugar cane

义项编号 14606993-n

1条概念或词汇关系

羟胆碱

同一义项的词语:羟胆碱

a crystalline amino acid obtained from gelatin or collagen

义项编号 14607131-n

1条概念或词汇关系

氨基酸

同一义项的词语:氨基酸

an amino acid with iodine added

义项编号 14607250-n

3条概念或词汇关系

鸟氨酸

同一义项的词语:鸟氨酸

an amino acid that does not occur in proteins but is important in the formation of urea

义项编号 14607378-n

1条概念或词汇关系

酸、酸性物质、酸类

同一义项的词语:酸、酸性物质、酸类

any of various water-soluble compounds having a sour taste and capable of turning litmus red and reacting with a base to form a salt

义项编号 14607521-n

58条概念或词汇关系

酸碱指示剂

同一义项的词语:酸碱指示剂

an indicator that changes color on going from acidic to basic solutions

义项编号 14609198-n

3条概念或词汇关系

亚麻酸

同一义项的词语:亚麻酸

a polyunsaturated fatty acid with 18 carbon atoms; the only omega-3 fatty acid found in vegetable products; it is most abundant in canola oil; a fatty acid essential for nutrition

义项编号 14609443-n

1条概念或词汇关系

α萘酚

同一义项的词语:α萘酚

an isomer of naphthol used in dyes

义项编号 14609689-n

莫利希试验、萘酚检测

同一义项的词语:莫利希试验、萘酚检测

biochemical indicator of the presence of carbohydrates in a solution; if carbohydrates are present a violet ring is formed by reaction with alpha-naphthol in the presence of sulfuric acid

义项编号 14609784-n

芳族化合物

同一义项的词语:芳族化合物

a hydrocarbon containing one or more benzene rings that are characteristic of the benzene series of compounds

义项编号 14610088-n

砷酸盐、砷酸酯

同一义项的词语:砷酸盐、砷酸酯

a salt or ester of arsenic acid

义项编号 14610261-n

1条概念或词汇关系

  • 上位概念:盐

砷酸

同一义项的词语:砷酸

an acid formed from arsenic pentoxide

义项编号 14610347-n

1条概念或词汇关系

砷化物

同一义项的词语:砷化物

a compound of arsenic with a more positive element

义项编号 14610443-n

1条概念或词汇关系

蜡酸

同一义项的词语:蜡酸

a white solid fatty acid found in waxes (such as beeswax)

义项编号 14610548-n

1条概念或词汇关系

氯酸盐

同一义项的词语:氯酸盐

any salt of chloric acid

义项编号 14610703-n

1条概念或词汇关系

  • 上位概念:盐

氯酸

同一义项的词语:氯酸

(HClO3) a strong unstable acid with an acrid odor found in chlorate salts

义项编号 14610782-n

1条概念或词汇关系

亚氯酸

同一义项的词语:亚氯酸

(HClO2) a strongly oxidizing acid; known only in solution

义项编号 14610914-n

1条概念或词汇关系

一价酸

同一义项的词语:一价酸

an acid containing only one replaceable hydrogen atom per molecule

义项编号 14611031-n

1条概念或词汇关系

二元酸

同一义项的词语:二元酸

an acid containing two replaceable hydrogen atoms per molecule

义项编号 14611158-n

1条概念或词汇关系

二价盐

同一义项的词语:二价盐

a salt derived by replacing two hydrogen atoms per molecule

义项编号 14611279-n

1条概念或词汇关系

  • 上位概念:盐

三元酸

同一义项的词语:三元酸

an acid containing three replaceable hydrogen atoms per molecule

义项编号 14611397-n

1条概念或词汇关系

三重氢、氘

同一义项的词语:三重氢、氘

a radioactive isotope of hydrogen; atoms of tritium have three times the mass of ordinary hydrogen atoms

义项编号 14611521-n

1条概念或词汇关系

四元酸

同一义项的词语:四元酸

an acid containing four replaceable hydrogen atoms per molecule

义项编号 14611679-n

1条概念或词汇关系

雷酸

同一义项的词语:雷酸

(CNOH) an unstable acid occurring mainly in the form of explosive salts and esters that is isomeric with cyanic acid

义项编号 14611804-n

1条概念或词汇关系

伽马酸

同一义项的词语:伽马酸

a crystalline acid used to make azo dyes

义项编号 14611980-n

1条概念或词汇关系

重金属

同一义项的词语:重金属

a metal of relatively high density (specific gravity greater than about 5) or of high relative atomic weight (especially one that is poisonous like mercury or lead)

义项编号 14612077-n

2条概念或词汇关系

己二酸

同一义项的词语:己二酸

a carboxylic acid used in the manufacture of nylon

义项编号 14612317-n

1条概念或词汇关系

辣根过氧化物酶

同一义项的词语:辣根过氧化物酶

an enzyme used in immunohistochemistry to label antigens and their antibodies

义项编号 14612618-n

叠氮酸

同一义项的词语:叠氮酸

a colorless explosive liquid that is volatile and poisonous and foul-smelling

义项编号 14612764-n

2条概念或词汇关系

氢碘酸

同一义项的词语:氢碘酸

(HI) a colorless or yellow aqueous solution of hydrogen iodide; "hydriodic acid is a strong acid"

义项编号 14612972-n

1条概念或词汇关系

氟氯烃化合物

同一义项的词语:氟氯烃化合物

a fluorocarbon that is replacing chlorofluorocarbon as a refrigerant and propellant in aerosol cans; considered to be somewhat less destructive to the atmosphere

义项编号 14613130-n

1条概念或词汇关系

氢氰酸

同一义项的词语:氢氰酸

a highly poisonous gas or volatile liquid that smells like bitter almonds; becomes a gas at around 90 degree Fahrenheit and is most dangerous when inhaled; the anhydride of hydrocyanic acid; used in manufacturing

义项编号 14613368-n

1条概念或词汇关系

氢氰酸

同一义项的词语:氢氰酸

a solution of hydrogen cyanide in water; weak solutions are used in fumigating and in the synthesis of organic compounds

义项编号 14613643-n

1条概念或词汇关系

水解产物、水解液

同一义项的词语:水解产物、水解液

a product of hydrolysis

义项编号 14613841-n

1条概念或词汇关系

醇酸

同一义项的词语:醇酸

any acid that has hydroxyl groups in addition to the hydroxyl group in the acid itself

义项编号 14613922-n

5条概念或词汇关系

羟基苯酸

同一义项的词语:羟基苯酸

a crystalline derivative of benzoic acid

义项编号 14614139-n

1条概念或词汇关系

次氯酸盐

同一义项的词语:次氯酸盐

any salt or ester of hypochlorous acid

义项编号 14614245-n

3条概念或词汇关系

连二次硝酸

同一义项的词语:连二次硝酸

an explosive white crystalline weak acid (H2N2O2)

义项编号 14614378-n

1条概念或词汇关系

连二磷酸

同一义项的词语:连二磷酸

a crystalline tetrabasic acid (H4P2O6)

义项编号 14614490-n

次磷酸

同一义项的词语:次磷酸

a clear or yellow monobasic acid (H3PO2)

义项编号 14614594-n

含桧酸

同一义项的词语:含桧酸

a crystalline acid found in the exudations of some conifers

义项编号 14614744-n

1条概念或词汇关系

麦角酸

同一义项的词语:麦角酸

a crystalline acid often used in medical research; obtained from ergotic alkaloids

义项编号 14614864-n

1条概念或词汇关系

锰酸

同一义项的词语:锰酸

a dibasic acid (H2MnO4) found only in solution and in manganate salts

义项编号 14615006-n

1条概念或词汇关系

偏磷酸

同一义项的词语:偏磷酸

a glassy solid acid ([HPO3]n) often used as a dehydrating agent

义项编号 14615135-n

1条概念或词汇关系

聚磷酸

同一义项的词语:聚磷酸

a series of oxyacids of phosphorus

义项编号 14615264-n

2条概念或词汇关系

焦棓酸、焦酚、连苯三酚

同一义项的词语:焦棓酸、焦酚、连苯三酚

a toxic white lustrous crystalline phenol used to treat certain skin diseases and as a photographic developer

义项编号 14615400-n

2条概念或词汇关系

焦磷酸

同一义项的词语:焦磷酸

a solid acid formed by reactions of orthophosphoric acid

义项编号 14615602-n

1条概念或词汇关系

焦磷酸盐

同一义项的词语:焦磷酸盐

a salt or ester of pyrophosphoric acid

义项编号 14615724-n

1条概念或词汇关系

  • 上位概念:盐

甲基丙烯酸

同一义项的词语:甲基丙烯酸

an unsaturated acid (C4H6O2) used to make resins and plastics

义项编号 14615822-n

1条概念或词汇关系

粘液酸、粘酸、黏酸

同一义项的词语:粘液酸、粘酸、黏酸

a solid acid (C6H10O8) found in milk or sugar

义项编号 14615971-n

1条概念或词汇关系

硒酸

同一义项的词语:硒酸

a strong acid (H2SeO4) analogous to sulfuric acid

义项编号 14616073-n

1条概念或词汇关系

辛二酸

同一义项的词语:辛二酸

a dicarboxylic acid found in cork

义项编号 14616181-n

1条概念或词汇关系

琥珀酸

同一义项的词语:琥珀酸

a dicarboxylic acid (C4H6O4) active in metabolic processes

义项编号 14616292-n

1条概念或词汇关系

磺酸盐

同一义项的词语:磺酸盐

a salt of sulphonic acid

义项编号 14616410-n

2条概念或词汇关系

磺酸

同一义项的词语:磺酸

an acid derived from sulphuric acid

义项编号 14616508-n

1条概念或词汇关系

钛酸

同一义项的词语:钛酸

a white weak acid that is a hydrated form of titanium dioxide

义项编号 14616620-n

1条概念或词汇关系

二氧化钛

同一义项的词语:二氧化钛

a white powder used as a pigment for its high covering power and durability

义项编号 14616740-n

1条概念或词汇关系

掺杂剂、掺杂物

同一义项的词语:掺杂剂、掺杂物

any substance that lessens the purity or effectiveness of a substance; "it is necessary to remove the adulterants before use"

义项编号 14616939-n

1条概念或词汇关系

  • 派生关联:掺杂+的(词汇级关系 0102)

烃基、烷基

同一义项的词语:烃基、烷基

any of a series of univalent groups of the general formula CnH2n+1 derived from aliphatic hydrocarbons

义项编号 14617189-n

3条概念或词汇关系

烯丙基

同一义项的词语:烯丙基

the univalent unsaturated organic radical C3H5; derived from propylene

义项编号 14617427-n

2条概念或词汇关系

氨基

同一义项的词语:氨基

the radical -NH2

义项编号 14617597-n

2条概念或词汇关系

甲胺

同一义项的词语:甲胺

a methyl with the hydrogen atom replaced by an amino radical

义项编号 14617715-n

阴离子化合物

同一义项的词语:阴离子化合物

a compound characterized by an active anion

义项编号 14617944-n

1条概念或词汇关系

阴离子去污剂

同一义项的词语:阴离子去污剂

a class of synthetic detergents in which the molecules do not ionize in aqueous solutions

义项编号 14618050-n

1条概念或词汇关系

可溶性无机盐、碱

同一义项的词语:可溶性无机盐、碱

any of various water-soluble compounds capable of turning litmus blue and reacting with an acid to form a salt and water; "bases include oxides and hydroxides of metals and ammonia"

义项编号 14618253-n

4条概念或词汇关系

二元化合物

同一义项的词语:二元化合物

chemical compound composed of only two elements

义项编号 14618834-n

5条概念或词汇关系

螯合物

同一义项的词语:螯合物

a heterocyclic compound having a metal ion attached by coordinate bonds to at least two nonmetal ions

义项编号 14619033-n

2条概念或词汇关系

原子

同一义项的词语:原子

(physics and chemistry) the smallest component of an element having the chemical properties of the element

义项编号 14619225-n

11条概念或词汇关系

同位素

同一义项的词语:同位素

one of two or more atoms with the same atomic number but with different numbers of neutrons

义项编号 14619658-n

4条概念或词汇关系

放射性同位元素、放射性同位素

同一义项的词语:放射性同位元素、放射性同位素

a radioactive isotope of an element; produced either naturally or artificially

义项编号 14619857-n

4条概念或词汇关系

标记、标记元素

同一义项的词语:标记、标记元素

a radioactive isotope that is used in a compound in order to trace the mechanism of a chemical reaction

义项编号 14620066-n

1条概念或词汇关系

三溴甲烷

同一义项的词语:三溴甲烷

colorless liquid haloform CHBr3

义项编号 14620549-n

1条概念或词汇关系

三氟甲烷

同一义项的词语:三氟甲烷

colorless gas haloform CHF3 (similar to chloroform)

义项编号 14620654-n

1条概念或词汇关系

三碘甲烷、碘仿

同一义项的词语:三碘甲烷、碘仿

sweet smelling yellow solid haloform CHI3

义项编号 14620781-n

1条概念或词汇关系

卤仿

同一义项的词语:卤仿

compounds with the formula CHX3, where X is a halogen atom

义项编号 14620895-n

5条概念或词汇关系

叠氮自由基

同一义项的词语:叠氮自由基

the univalent group N3- derived from hydrazoic acid

义项编号 14621194-n

1条概念或词汇关系

偶氮基

同一义项的词语:偶氮基

the bivalent group -N=N- united to two hydrocarbon groups

义项编号 14621319-n

1条概念或词汇关系

化学族

同一义项的词语:化学族

(chemistry) two or more atoms bound together as a single unit and forming part of a molecule

义项编号 14621446-n

22条概念或词汇关系

富勒烯

同一义项的词语:富勒烯

a form of carbon having a large molecule consisting of an empty cage of sixty or more carbon atoms

义项编号 14622141-n

3条概念或词汇关系

碳纳米管

同一义项的词语:碳纳米管

a fullerene molecule having a cylindrical or toroidal shape

义项编号 14622491-n

1条概念或词汇关系

苯甲基

同一义项的词语:苯甲基

the univalent radical derived from toluene

义项编号 14622623-n

2条概念或词汇关系

苯酰基

同一义项的词语:苯酰基

the univalent radical derived from benzoic acid

义项编号 14622768-n

1条概念或词汇关系

元素、化学元素

同一义项的词语:元素、化学元素

any of the more than 100 known substances (of which 92 occur naturally) that cannot be separated into simpler substances and that singly or in combination constitute all matter

义项编号 14622893-n

38条概念或词汇关系

同素体、同素异形体

同一义项的词语:同素体、同素异形体

a structurally different form of an element; "graphite and diamond are allotropes of carbon"

义项编号 14624025-n

2条概念或词汇关系

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