该针的针柄或针尾设有空气过滤装置和防反流装置。
The needle handle or needle end of the needle is provided with an air filtering apparatus and a back flowing preventing apparatus.
该针的针柄或针尾设有空气过滤装置和防反流装置。
The needle handle or needle end of the needle is provided with an air filtering apparatus and a back flowing preventing apparatus.
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