The structure and principle of needle valve cushion and relief valve cushion were introduced.
本文介绍了针阀式缓冲气缸和溢流式缓冲气缸的结构及工作原理。
Product structure: The product consists of protective cover, needle tube, needle seat and syringe.
本产品由保护套、针管、针座、和注射器组成。
Product structure: The product consists of protective cover, needle tube, needle seat and...
产品结构：本产品由保护套、针管、针座、和注射器组成。
Product structure: The product consists of protective cover, needle tube, needle seat and...
产品结构：本产品由保护套、针管、针座、和注射器组成。
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