空区 meaning in Chinese
gap
sap
skip area
Examples
- In 1898 , the yukon territory of canada was organized
1898年，加拿大育空区建立。 - Technical research on adjusting shaft water with goaf water
利用老空区调控矿井水技术 - Disposal of the irregular mine goaf in sandaozhuang mining district
三道庄矿区不规则空区的处理 - Research on technique of controlling mine water with old goaf water
利用老空区调控矿井水技术研究 - Grouting and water sealing technology for mine shaft sinking through water flooded goaf
井筒过积水老空区的注浆堵水技术