In the part of explaining the working theory, it introduces the mechanism among the organs during the trigging process.

文章介绍了其作原理，分析了安全保护装置各机构的相互作用机理。

A clamping and self-locking cotton precision dibbler was designed and tested in this study.Its operating principle and working process were discussed and analyzed.

摘要设计了夹持自锁式棉花精量播器，论述了其结构和作原理，并分析了主要作程。