3楼: Originally posted by A152771025 at 2015-03-04 17:00:15
前辈你好，我一开始也是这么直译的，但问题是：1.蒸馏水哪里有质量浓度分数；2.盐酸怎么会有两个浓度？谢谢...

2楼: Originally posted by genhunter at 2015-03-04 16:36:10
“2 wt.% distilled water and 0.2 wt.% hydrochloric acid (37 wt.%) were added to the solution.”
溶液(我想应该是有机溶液)中加入2% (w/w)的蒸馏水和0.2%(w/w)的浓度为37%(w/w)的浓盐酸。