| 单词 | 比重大 |
| 释义 | 〔chloroform〕A clear, colorless, heavy, sweet-smelling liquid, CHCl3, used in refrigerants, propellants, and resins, as a solvent, and sometimes as an anesthetic. Chloroform, once widely used in human and veterinary surgery, has generally been replaced by less toxic, more easily controlled agents. 三氯甲烷，氯仿：一种清澈、无色、比重大、有香味的液体，CHCl3，作为溶剂，有时作为麻醉剂而用于冷冻剂、推动剂和树脂。氯仿曾一度被广泛用于人类及兽医外科手术，现已普遍被低麻醉性且较易控制的药剂取代 〔trichloroethylene〕A heavy, colorless, toxic liquid, CHCl:CCl2, used to degrease metals, as an extraction solvent for oils and waxes, as a refrigerant, in dry cleaning, and as a fumigant. 三氯乙烯：一种比重大、无色、有毒的液体CHCl:CCl2，用作金属的去油剂、油类和蜡的萃取溶济、冷却剂和熏剂，也用于干洗中 〔bromine〕A heavy, volatile, corrosive, reddish-brown, nonmetallic liquid element, having a highly irritating vapor. It is used in producing gasoline antiknock mixtures, fumigants, dyes, and photographic chemicals. Atomic weight 79.904; atomic number 35; melting point 7.2°C; boiling point 58.78°C; valence 1, 3, 5, 7. See table at element 溴：一种比重大、易挥发、有腐蚀性的棕红色非金属液体元素，有刺鼻的气味。用于生产汽油减震剂、薰蒸剂、染料和照相用的化学品。原子量79.904；原子序数35；熔点7.2°C；沸点58.78°C；化合价1,3,5,7 参见 element |
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