The hollow sliding cylindrical body, the air pipe, the hollow sliding block, and the hollow push rod are connected into integration.
中空滑动柱体、气管、中空滑动块和中空推杆连成整体。
The hollow sliding cylindrical body, the air pipe, the hollow sliding block, and the hollow push rod are connected into integration.
中空滑动柱体、气管、中空滑动块和中空推杆连成整体。
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