1) open up the working class movement
开拓工运
3) Railway transport de-velopment system
铁路运输开拓工艺
4) Development work
开拓工程
1.
The technical problem which development opening was excavated at the footwall instead of the hanging wall was discussed, and optimization of blasting parameters in the dolomite was studied according to the condition of development work of the Level 1120 m in the Yongsha Phosphorite Mine.
论文结合开阳磷矿用沙坝矿1120开拓工程的具体情况,探讨了将原来的在底板中的开拓巷道改到顶板中进行这一技术问题,并对白云岩中的爆破参数进行优化研究。
补充资料：工运
1.工人运动的简称。
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