名词
中文翻译：活塞孔
同义词：
['piston hole', 'valve hole']
例句：
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1.The engine needs to be checked for any piston pin holes that may cause damage.
发动机需要检查是否有可能导致损坏的活塞孔。
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2.The car's engine was replaced after a piston pin hole was found in the cylinder head.
在气缸头发现一个活塞孔后，这辆车的发动机被更换了。
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3. The technician carefully removed the piston pin hole and replaced it with a new one.
技术人员小心地移除了活塞孔并用一个新的替换了它。