| 单词 | 黑火药 |
| 释义 | 〔sulfur〕A pale yellow nonmetallic element occurring widely in nature in several free and combined allotropic forms. It is used in black gunpowder, rubber vulcanization, the manufacture of insecticides and pharmaceuticals, and in the preparation of sulfur compounds such as hydrogen sulfide and sulfuric acid. Atomic number 16; atomic weight 32.064; melting point (rhombic) 112.8°C; (monoclinic) 119.0°C; boiling point 444.6°C; specific gravity (rhombic) 2.07; (monoclinic) 1.957; valence 2, 4, 6. See table at element 硫，硫磺：一种浅黄色的非金属元素，以几种游离的或结合的同素异形形态广泛存在于自然界中。硫磺可用于黑火药、橡胶的硫化、杀虫剂和药物的制作以及硫化合物（如硫化氢和硫酸）的配制。原子序数16；原子量32.064；熔点（正交晶）112.8°C；（单结晶）119.0°C；沸点444.6°C；比重（正交晶）2.07；（单结晶）1.957；化合价2,4,6 参见 element |
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