单词：opposite force
opposite force的用法和样例：
例句
- A reaction generally remains fixed in elevation even though it carries a force.即使承受力，通常反力还是在垂直面内维持固定不变。
- The dynamic characteristics of the magnetic operating mechanisms is decided by the match of the electromagnetic force and the counterforce.电磁操动机构动态特性是由电磁吸力和负载反力配合过程决定的。
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