Due to carelessness, his head hit the doorframe with a loud bang.他不小心把头撞到了门框上,一声钝响.Mother held on to the doorframe and almost fell.母亲手扶着门框,几乎跌倒.He flushed the bottom of the doorframe.他把门框的底部调到水平状态....
他被指控为英国间谍，入狱关押了5年。He was jailed for five years as an alleged British spy.但法律专家们不能肯定这一指控是否成立。But legal experts are not sure if such a charge can stick.她的助手被警方指控犯有盗窃和欺诈罪。Her assistant was accused of theft and fraud by the ...
The silicone quaternary was synthesized reaction of - H silicone, unsaturated - ether, chloroacetic acid, dimethylamine.以低含氢硅油 、 不饱和聚醚 、 一氯乙酸和二甲胺为原料, 制备得阳离子有机硅油.Amphoteric monomer is prepared with acrylic acid , dimethyl...