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- loose and soft coal seams 松软煤层
- Analysis on Road Support Under Loose and Soft Coal Bed 松软岩体下巷道的支护分析
- Top coal caving technology in high inclination-angled soft coal seam with hard roof and soft bottom 坚硬顶板软煤软底大倾角综放开采技术
- We also supply blind coal and soft coal from China and Indonesia. 煤炭产品主要是无烟煤与有烟煤等。
- Experiment of supporting with meshing and bolting for entry driving along gob side within soft roof, soft floor and soft coal seam 煤层沿空掘巷锚带网支护的应用研究
- Loose and soft coal stratum 松软煤层
- Soft Coal Seam Winning in High Gas Area 高瓦斯区松软煤层沿顶布巷综放回采
- The fox broke loose and ran away. 狐狸挣脱了束缚跑掉了。
- The screw worked loose and the door fell off the cupboard. 螺钉松脱了,门从碗橱上掉了下来。
- Research of bolting in soft coal seam with high earth stress 高地应力松软煤层锚杆支护应用研究
- The officials were holding loose and not in earnest. 官员们都漠然置之,并不认真对待。
- Coal miners; coal seams; coal haulers. 煤矿工; 煤层; 运煤工
- He really cut loose and told me what he thought of me. 他单刀直入说出对我的看法。
- Comprehensive Control Technology of the Way Host Rock Stability in the Loose and Soft Seam Under the Abandoned Place 采空区下松软煤层巷道围岩稳定性综合控制技术与应用
- Coal seams intermixed with iron ore. 煤层和铁矿混杂在一起。
- Roof Control of Tunnls of Full-mechanized Caving Mining Face in Soft Coal Seam 软煤层综放工作面两巷顶板管理
- My notebook pages were loose and falling apart. 我的日记本页面松动,几近散落。
- Foam Fluid's Application on Drilling in Soft Coal Seam for Gas Drainage 泡沫冲洗液在松软煤层中钻进瓦斯抽放孔的应用
- The old man's skin hung loose and gray. 老人的皮肤松弛的下垂着并且很灰暗。
- Mechanism of the rib spalling and the controlling in the very soft coal seam 极软厚煤层煤壁片帮与防治机理