main spring gauge

例句：

1. 1. The main spring gauge isused to measure the pressure of the engine's main bearing.
   主弹簧表用于测量发动机主轴承的压力。
2. 2. The technicianneeds to check the mainspring gauge before starting the engine.
   技术人员在启动发动机之前需要检查主弹簧表。
3. 3. The main spring gauge is anessential tool for inspecting the condition ofthe engine's main bearing.
   主弹簧表是检查发动机主轴承状况的必备工具。