Based on analysis of the principle of overflow valve dynamic characteristic test, virtual instrument system for the overflow valve measurement was designed.
在分析溢流阀动态特性测试原理的基础上，设计了溢流阀动态特性测试虚拟仪器系统。
2
The power produced by BLDC motor and pump is kind used by rotary steering drilling instrument, which has the characteristic of stabilization and easy controling.
前言： 电机泵动力作为旋转导向钻井工具导向力的一种，有着动力稳定、 可控性好等优点。
3
The virtual instrument has opening , easy using , characteristic with high cost performance to the traditional instrument, already been used widely in the detection system at present.