64光学仪器（optical instrumenet） 65气动测量仪器（Pneumatic measuring instrument） 66电动测量仪器(electromotion measuring instrument) ..
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On the basis of theoretical analysis on pneumatic measuring instruments, a new type of pneumatic instrument is introduced.
在对气动测量进行理论分析的基础上，研制出一种差动式新型气动量仪。
On the basis of theoretical analysis on the pneumatic measurement, a new type of pneumatic measuring instrument was developed.
本文在对气动测量进行理论分析的基础上，研制出一种新型气动量仪。
The theoretical basis of checking the internal leakage flowrate of relief valve by pneumatic measuring instrument was put forward.
提出应用气动量仪检测溢流阀液体泄漏量的理论依据。
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