单词：force moment
force moment的用法和样例：
例句
- A variable pitching moment is provided by moving the elevator.俯仰力矩的变化由升降舵的偏转来提供。
- Maximums are based on the operating force for each valve size.这些最大压差是以各个通径阀门的操作力矩为基础计算的。
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