蒸发的物质能再凝结, 形成新的粒子.Evaporated material can recondense, forming new particles.吸气离子泵通过剩余气体与蒸发的金属之间的化学反应减少了内腔的压力.Getter - ion pumps decrease chamber pressure by chemical reaction of residual gases with an evaporated metal.它通...
在拿吃的之前,用热肥皂水把手好好地洗干净。Wash your hands thoroughly with hot soapy water before handling any food.激进的女权主义是时下名嘴阶层热议的话题。Radical feminism is currently the fashionable topic among the chattering classes.虽然天气越来越热,他们仍全部戴着高顶礼帽,穿着燕尾...