valve plug的用法和樣例：
例句
- The additional benefit of lifting the plug is the low friction and low torque required to cycle the valve.
提升閥塞的其他優點是循環操作閥門所要求的低摩擦和低扭矩。 - The facing is deposited on the plug and body seats and is then machined to a mirror-like surface.
閥塞和閥體閥座表面先由沉積層形成，然後經過機加工製成鏡面光潔度表面。
