单词 | 无烟火药 |
例句 | DEFINITIVE EXAMPLES 权威例句〔smokeless powder〕A relatively smoke-free propellant charge composed mainly of nitrocellulose, used in projectiles and small artillery rockets.无烟火药:一种基本上无烟的推进器填装物,主要由硝化纤维素组成,用于发射火箭或小型火箭美国传统 |
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