| 单词 | black powder |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔ferrous oxide〕A black powder, FeO, used in the manufacture of steel, green heat-absorbing glass, and enamels.氧化亚铁：一种用于生产钢、绿色吸热玻璃及瓷漆的黑色粉末，FeO美国传统〔mercuric sulfide〕Black mercuric sulfide, a black powder obtained from mercury salts or by the reaction of mercury with sulfur, used as a pigment.黑色硫化汞：黑色硫化汞，是来自于汞盐或通过水银与硫磺反应而得到的一种黑色粉末，用作颜料美国传统〔platinum black〕A fine black powder of metallic platinum, used as a catalyst and as a gas absorbent.铂黑：一种很细的金属铂黑色粉末，用作催化剂和气体吸附剂美国传统 |
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