Each cushion has a flush, retained adjustment needle.
每个垫有一个刷新，保留调整针。
2
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。
3
The structure and principle of needle valve cushion and relief valve cushion were introduced. Cushion performance and capacity of absorbing impact were compared by simulation.