1) main span installation
主垮安装
2) erection of main beam
主梁安装
1.
This paper briefly introduces the technical process of the erection of main beam joints and main beam of 5t double-beam gallows crab bucket by usi ng 500×500 portal frame, sleepers and 50 t and 30 t autocranes, and expounds em phatically the overall design of the schemes, the selection of bearing platform s steel columns, the verification of the strength, and the erection of the platf orm, etc.
主要介绍了利用500×500龙门架,道木及50t、30t汽车吊进行5t双梁龙门抓斗主梁接头、主梁安装的工艺过程,并对其方案总体设计情况、支撑平台钢柱的选择、强度校验及平台搭设等环节进行了重点阐述。
4) main chute falling
主溜井垮塌
5) main connecting wiring
主接线安装
6) master valve mounting block
主阀安装体
补充资料：松垮垮
1.散漫;涣散。
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