two-trace method

Determination of the End ─ point in Potentiometric by Two-point Method

两点法确定电位滴定终点

Secondly, the pro-poor pricing should be applied in water industry. The method of two-part pricing can achieve an increase in welfare.

第二，在普遍服务要求下，水务产业的定价方式应该运用亲贫定价方式，其两部制定价方法能够实现福利的增加。

A new material surface modification method, or cold spraying technology, is introduced. In this way, the coat is deposited on the target by supersonic two phase flow at normal temperature or in a little bit heated gas.

介绍一种新型材料表面改性技术&冷喷涂技术，即气体在常温下或在有限加热温度下，利用超音速气流将涂层粉末喷射到基板形成保护涂层。

Computer Approach to the two Standard Addition Method in Potentiometric Analysis

电位分析中二次标准加入法的计算机逼近

This method has two advantages: first it is cheaper and second it is quicker.

这个方法有两个优点：一是更便宜，二是较快。