1.Titration: use a standard solution to titrate with a sample solution to find its molarity .
滴定法：用标准溶液去滴定样本溶液，找出其摩尔浓度。
2.The normality of a solution of a triprotic acid is three times its molarity.
一个三元酸溶液的当量浓度是它的莫耳浓度的三倍。
3.These two solutions still contain exactly the same number of molecules because they are of the same molarity .
这两种溶液仍然含有相同数量的分子，因为它们的克分子浓度相同。
4.The resulting mixture is then titrated back, taking into account the molarity of the excess which was added.
该混合物结果由一已知滴定后，计算出被添加的过剩浓度。
5.The number of moles of a solute in a litre of solution is its molarity (M);
1升溶液中溶质的莫耳数是它的体积克分子浓度（M）；
6.adding acid and water to maintain a certain molarity of the solution;
添加酸和水以使该溶液保持一定的摩尔浓度；