Objective: Adding two titrant standard solution volumes affecting acid basedouble point potentiometric method accuracy are discussed.
目的：探讨两次加入滴定剂标准溶液的体积对酸碱双点电位滴定法准确度的影响。
2
On the base of ma thematic model of induction motor and inverter, engineering designing method is used to design the PI regulator, and experiments on the double-closed-loops system is carried out.
在建立异步电动机和变频器数学模型的基础上，按照工程设计法设计出PI调节器，并进行了双闭环控制实验。
3
This paper presents a method of characteristic viscosity for evaluating reliability of double-base solid propellant through researching its ageing principles.