几个月不用,我的法语又回生了.I haven't practiced my French for months and it's getting rusty.一回生, 二回熟.First time strangers, second time friends.目的: 评价回生丸的脱毒药效学.Objective : To evaluate the detoxification effect of Huisheng pi...
某些颜料, 由于色素组成成份的性质而导致耐酸性很差.Certain colors, due to pigment ingredients, may inherently have very poor sulfuric acid resistance.耐酸性: 在2.5%盐酸溶液中浸24小时无明显腐蚀现象.Acidoresistant: Without corrode in 2.5 % hydrochloric Acid solution...