Reciprocating plunger seals have been substitute by mechanically or hydraulically actuated diaphragms in diaphragm pumps.
往复活塞密封被机械密封和液力隔膜泵所替代。
Coefficients of the multipliers are transformed into CSD forms and the multiplications are substitute by minimum shift-add operations.
把乘法器系数表示为CSD形式,将常系数乘法优化为最少的移位加操作。
The results show that the input white noise can be substitute by pseudo-random signals in identifying the impulse response of a drill-string system.
研究了伪随机信号的特征及伪随机信号产生的方法,得出了用伪随机信号代替白噪声信号辨识钻柱系统脉冲响应的结论。
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