喷枪在垂直面自动移动的装置，一个回动的或往复式的提供移动的装置。
Device used to move automatic guns in a vertical plane. A reversing or reciprocating drive system provides motion.
本文对现在使用的复式交分道岔安装装置中存在的问题作了较详细的分析，并提出了改进建议。
The article gives a detailed analysis of the problems existing in the installation device of multiple slip switches in service, and an improvement proposal.
其它往复式压缩机的防护装置应符合API 618或生产厂家标准，两者取一适用者。
Protective devices for other reciprocating compressor shall be in accordance with API 618 or manufacture's standard, whichever applicable.
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