单词 | 复合物 |
释义 | 〔chromatin〕A complex of nucleic acids and proteins in the cell nucleus that stains readily with basic dyes and condenses to form chromosomes during cell division.染色质,核染质:细胞核中由核酸与蛋白质组成的核酸复合物,容易被基本染料染色, 在细胞分裂期会浓缩而形成染色体〔electrophile〕A chemical compound or group that is attracted to electrons and tends to accept electrons.亲电子试剂:一种化学复合物或原子团,被电子吸引并具有吸引电子的倾向〔petrochemistry〕The chemistry of petroleum and its derivatives.石油化学:石油及其复合物的化学〔cracking〕Thermal decomposition, sometimes with catalysis, of a complex substance, especially the breaking of petroleum molecules into shorter molecules to extract low-boiling fractions such as gasoline.裂化:有时通过催化作用对复合物的热分解,尤指把石油分子分解成更小的分子并提取低沸点的分馏部分,如汽油〔aflatoxin〕Any of a group of toxic compounds produced by certain molds, especiallyAspergillus flavus, that contaminate stored food supplies such as animal feed and peanuts. 黄麴毒素:由某些霉菌,特别是黄麴 产生的一组有毒复合物,可破坏贮存食品,例如动物食品以及花生 〔thiamine〕A vitamin, C12H 17ClN 4OS, of the vitamin B complex, found in meat, yeast, and the bran coat of grains, and necessary for carbohydrate metabolism and normal neural activity. Also called vitamin B 1 硫胺:一种属于维生素B复合物的维生素C12H 17ClN 4OS,存在于肉、酵母及麦麸中,在糖代谢和正常神经活动中不可缺少 也作 vitamin B1 〔chelate〕A chemical compound in the form of a heterocyclic ring, containing a metal ion attached by coordinate bonds to at least two nonmetal ions.螯合物:杂环化学复合物,由一个金属离子与两个或两个以上非金属离子构成配位键〔saran〕Any of various thermoplastic resins derived from vinyl compounds and used to make packaging films, fittings, and bristles and as a fiber in various heavy fabrics.赛伦:任一种来源于乙烯复合物的热塑性树脂,用于制作包装胶片、设备、人造毛发或在各种重构造中充当纤维〔glyceraldehyde〕A sweet, colorless, crystalline solid, C3H 6O 3, that is an intermediate compound in carbohydrate metabolism. 甘油醛:一种甜的,无色结晶固体,C3H 6O 3,是糖代谢的中间复合物 〔electrometallurgy〕The use of electric and electrolytic processes to purify metals or reduce metallic compounds to metals.电冶金:利用电或电解方法来精练金属或将金属复合物熔炼为金属〔ferritin〕An iron-containing protein complex, found principally in the intestinal mucosa, spleen, and liver, that functions as the primary form of iron storage in the body.铁蛋白:一种主要存在于脾、肝和肠分泌的粘液中的含铁的蛋白复合物,它是身体内储存铁的主要形式〔strontium〕A soft, silvery, easily oxidized metallic element that ignites spontaneously in air when finely divided. Strontium is used in pyrotechnic compounds and various alloys. Atomic number 38; atomic weight 87.62; melting point 769°C; boiling point 1,384°C; specific gravity 2.54; valence 2. See table at element 锶:一种银色易氧化的软金属,被分割时能在空气中自燃。锶被用于烟火材料的复合物和各种合金。原子序数为38;原子量为87.62;熔点为769°C;沸点为1,384°C;比重为2.54;化合价为2 参见 element〔PABA〕A crystalline para form of aminobenzoic acid that is part of the vitamin B complex and is widely used in sunscreens to absorb ultraviolet light.对氨基苯酸:一种结晶的氨基苯酸形式,是维他命B复合物的一个组成部分并被广泛地用于过滤剂中以吸收紫外线光 |
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