Proportion/servo-valve的用法和樣例：
例句
- Adding vibrationg signals in the direction of the variation of the control signal, overcome the friction of the proportional valve and the cylinder.
在控制信號變化的方向上疊加顫振信號，克服了比例閥和氣缸的靜態摩擦力。 - The swash plate variable displacement pump applied to an electro-hydraulic servo system usually induces unstable performance.
摘要電液比例閥控斜板式變數泵應用於液壓伺服系統，常造成穩定性不良問題。
