SD rats were divided into 3 groups: control, scald and electret group.将大鼠分成对照组 、 烫伤组和驻极体实验组.The melt blown nonwoven technology, the electret theory and electret nonwoven are introduced in this paper.系统介绍了非织造布熔喷工艺 、 驻极化理论...
His promotion caused much heartburning among his rivals.他的升职招致对手的嫉妒.Not getting the promotion was a real downer.未得到提升真让人很沮丧。Doyle was passed over for promotion.多伊尔未被考虑提升.His promotion was assured.他的晋升是无疑的。He's at a ...