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共 41,499 条,第389页完整浏览。按义项组织词语;同义词集及概念关系不表示这些词在任意句子中都能替换。英文义项说明保留来源原文。
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同一义项的词语:抗磁体
a substance that exhibits diamagnetism
义项编号 14604763-nany organic compound containing two amino groups
义项编号 14604857-namino acid that is formed in the liver and converted into dopamine in the brain
义项编号 14604959-n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-na nuclease that cleaves nucleic acids at interior bonds and so produces fragments of various sizes
义项编号 14605415-n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同一义项的词语:氨基酸
an amino acid with iodine added
义项编号 14607250-n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-nany 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同一义项的词语:α萘酚
an isomer of naphthol used in dyes
义项编号 14609689-nbiochemical 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-na salt or ester of arsenic acid
义项编号 14610261-n同一义项的词语:砷酸
an acid formed from arsenic pentoxide
义项编号 14610347-n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同一义项的词语:氯酸盐
any salt of chloric acid
义项编号 14610703-n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同一义项的词语:三元酸
an acid containing three replaceable hydrogen atoms per molecule
义项编号 14611397-na radioactive isotope of hydrogen; atoms of tritium have three times the mass of ordinary hydrogen atoms
义项编号 14611521-n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同一义项的词语:伽马酸
a crystalline acid used to make azo dyes
义项编号 14611980-n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-na product of hydrolysis
义项编号 14613841-n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同一义项的词语:羟基苯酸
a crystalline derivative of benzoic acid
义项编号 14614139-n同一义项的词语:次氯酸盐
any salt or ester of hypochlorous acid
义项编号 14614245-n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同一义项的词语:连二磷酸
a crystalline tetrabasic acid (H4P2O6)
义项编号 14614490-n同一义项的词语:次磷酸
a clear or yellow monobasic acid (H3PO2)
义项编号 14614594-n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同一义项的词语:聚磷酸
a series of oxyacids of phosphorus
义项编号 14615264-na toxic white lustrous crystalline phenol used to treat certain skin diseases and as a photographic developer
义项编号 14615400-n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同一义项的词语:焦磷酸盐
a salt or ester of pyrophosphoric acid
义项编号 14615724-n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-na solid acid (C6H10O8) found in milk or sugar
义项编号 14615971-n同一义项的词语:硒酸
a strong acid (H2SeO4) analogous to sulfuric acid
义项编号 14616073-n同一义项的词语:辛二酸
a dicarboxylic acid found in cork
义项编号 14616181-n同一义项的词语:琥珀酸
a dicarboxylic acid (C4H6O4) active in metabolic processes
义项编号 14616292-n同一义项的词语:磺酸盐
a salt of sulphonic acid
义项编号 14616410-n同一义项的词语:磺酸
an acid derived from sulphuric acid
义项编号 14616508-n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-nany substance that lessens the purity or effectiveness of a substance; "it is necessary to remove the adulterants before use"
义项编号 14616939-nany of a series of univalent groups of the general formula CnH2n+1 derived from aliphatic hydrocarbons
义项编号 14617189-n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同一义项的词语:氨基
the radical -NH2
义项编号 14617597-n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-nany 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-na radioactive isotope of an element; produced either naturally or artificially
义项编号 14619857-na radioactive isotope that is used in a compound in order to trace the mechanism of a chemical reaction
义项编号 14620066-n同一义项的词语:三溴甲烷
colorless liquid haloform CHBr3
义项编号 14620549-n同一义项的词语:三氟甲烷
colorless gas haloform CHF3 (similar to chloroform)
义项编号 14620654-nsweet smelling yellow solid haloform CHI3
义项编号 14620781-n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同一义项的词语:苯甲基
the univalent radical derived from toluene
义项编号 14622623-n同一义项的词语:苯酰基
the univalent radical derived from benzoic acid
义项编号 14622768-nany 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-na structurally different form of an element; "graphite and diamond are allotropes of carbon"
义项编号 14624025-n