名词
中文翻译：不可调节的凸轮
同义词：
['unadjustable cam', 'non-adjustable camshaft']
例句：
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1. Thenew car has a non-adjustable cam that makes driving smoother.
这款新车有一个不可调节的凸轮，让驾驶更加顺畅。
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2. The old engine had an unadjustable cam that was causing problems with the transmission.
旧引擎有一个不可调节的凸轮，导致传动系统出现问题。
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3. The engineers had to replace the non-adjustable cam with a new one to fix the problem.
工程师们不得不用一个新的不可调节的凸轮来解决这个问题。