名词
中文翻译：活塞杆
同义词：
['piston rod', 'cylinder boss例句：1. The piston rodis the part that moves up and downto power the engine.（活塞杆是移动来推动发动机的部分。）2. The piston rodboss is responsible for guiding the pistonrod into the cylinder.（活塞杆主管负责将活塞杆引导到气缸中。）']
例句：
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1. The piston rodis the part that moves up and downto power the engine.
活塞杆是移动来推动发动机的部分。
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2. The piston rodboss is responsible for guiding the pistonrod into the cylinder.
活塞杆主管负责将活塞杆引导到气缸中。
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3. Thepiston rod boss needs to be replacedregularly to ensure smooth operation of the engine.
活塞杆主管需要定期更换，以确保发动机的顺畅运行。