在1963年, 我们使用了内燃真空燃烧器的煤气加热系统.In 1963, we evaluated an infrared vacuum combustion, gas heating system.满至烧瓶颈部的有机层被抽吸进入原子吸收燃烧器中.The organic layer in the neck of the flask is aspirated into the atomic absorption burner.摘要简要叙述...
The lemon geranium sloughs dry brown leaves at the base of its branches.柠檬天竺葵枝条底部棕色的枯叶会脱落。Every spring this snake sloughs off its old skin.每年春天,蛇蜕去皮.A cicada sloughs off its old skin every spring.蝉每年春天蜕皮....
他一直致力于在教育系统内为美籍拉美人和黑人争取权益。He was a champion for Latinos and blacks within the educational system.住房与教育方面的种族不平等现象让黑人深受伤害。Blacks have been hurt by racial inequalities in housing and education.警方并未真正特意为黑人群体做什么.The police ha...