1) retractable device
可缩装置
1.
This article mainly introduce design and installation process of tube-sheet retractable device, describe the installation process,construction experience of the main and assistant well s inner wall belonging to Garden mine.
介绍管板组合式可缩装置设计原理及安装工艺,并阐述在花园矿主、副井内层井壁的安装工艺流程、施工经验。
2) installation of the retractable device
可缩装置安装
3) the installation of compressible device
可压缩装置安装
4) extensible grounding de-vice
可伸缩接地装置
5) the well wall may shrink device
井壁可缩装置
6) retractable coal breakage-proof device
可伸缩式防破碎装置
补充资料：封口装置——滚纹装置
封口装置——滚纹装置     | ||
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说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条