Objective: Adding two titrant standard solution volumes affecting acid base double 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。
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。
This paper presents a method of characteristic viscosity for evaluating reliability of double-base solid propellant through researching its ageing principles.
采用差热分析法和水溶液密封老化后的特性粘度法，全面系统地研究了国内外十种降滤失剂的耐温性。
The present invention relates to a rare earth ion double-doped or three-doped or three-doped yttrium oxide base up-conversion luminescence material and its preparation method.
本发明是关于一种稀土离子双掺杂或者三掺杂的氧化钇基上转换发光材料及其制备方法，属于发光物理学中的发光材料领域。
The lower-middle frequency range power flow calculation method of the double-layer vibration isolation system on flexible base is established.
多层隔振系统是隔振降噪一项重要的技术，而功率流方法是评价隔振系统隔振效果的有效方法。
The lower-middle frequency range power flow calculation method of the double-layer vibration isolation system on flexible base is established.
多层隔振系统是隔振降噪一项重要的技术，而功率流方法是评价隔振系统隔振效果的有效方法。
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