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1.The air cylinder valve stem is crucial for the operation of the air pump.
气筒阀杆对于空气泵的运行至关重要。
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2.The engineer carefully adjusted the air cylinder valve stem to ensure smooth operation.
工程师仔细调整了气筒阀杆，以确保操作顺畅。
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3.The air cylinder valve stem was damaged during the accident, which caused the air pump to stop working.
事故中气筒阀杆受损，导致空气泵停止工作。