名词
中文翻译：活塞头
同义词：
['piston', 'cylinder head例句：1. The piston head is the part of the engine that moves up and down to turn the crankshaft.（活塞头是发动机中上下移动以转动曲轴的部分。）2. The piston head is designed to fit perfectly into the cylinder bore.（活塞头设计得能够完美地适配到气缸孔中。）']
例句：
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1. The piston head is the part of the engine that moves up and down to turn the crankshaft.
活塞头是发动机中上下移动以转动曲轴的部分。
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2. The piston head is designed to fit perfectly into the cylinder bore.
活塞头设计得能够完美地适配到气缸孔中。
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3.The piston head is made of hardened steel and is responsible for sealing the combustion chamber.
活塞头由硬化的钢制成，负责密封燃烧室。