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- Medium and small coal mines in north of Shaanxi Province generally adopt longwall remaining coal pillars support mining. 摘要长壁留煤柱支撑法开采是陕北中小煤矿普遍采用的一种采煤方法。
- Study of the Safety Management of Medium and Small Coal Mines 关于中小煤矿安全管理问题的探讨
- The Coice of the Plan on Duplicate Power Supply Self-deliver in Medium and Small Coal Mines 中小型煤矿双电源自投方案选择
- medium and small coal mines 中小型煤矿
- Safety mining operation of medium and small coal mines under thick loose layer basic rock in low depth 中小型煤矿浅埋厚松散层薄基岩下安全开采
- In coal production areas,coal marketing and transport service agencies may be set up to provide marketing and transport services for medium-sized and small coal mines. 在煤炭产区可以组成煤炭销售、运输服务机构，为中心煤矿办理经销、运输业务。
- In coal production areas, coal marketing and transport service agencies may be set up to provide marketing and transport services for medium-sized and small coal mines. 在煤炭产区可以组成煤炭销售、运输服务机构，为中心煤矿办理经销、运输业务。
- At present our country has considerable number of medium-sized and small coal mines,in its production process material or coal transportation uses single drum winding winch. 我国目前存在着相当数量的中小煤矿,其生产过程中的物质或者煤炭运输多采用单滚筒缠绕式绞车。
- Medium -sized and small coal mine 中小煤矿
- In the most prominent case, local officials in the northern province of Shanxi have been accused of abetting managers of brick factories and small coal mines who used forced labor. 其中影响最大的一个案例是山西省地方官员被指纵容当地黑砖窑和黑煤窑强迫用工。
- Gas Emission Law Controlled by Medium and Small Structures in Coal Mines 煤矿中小型构造控制瓦斯涌出规律
- Medium and small banks also face a growing risk. 中小型银行也面临不断成长的风险。
- The Position of Medium and Small Lubricating Oil Plants? 中小型润滑油厂的位置在哪里?
- How could Medium and Small Companies Prevent Financing Traps? 中小企业如何防范融资陷阱?
- What sizes do you have? We have large, medium and small bowls. 你们有多大碗的？我们有大碗、中碗和小碗。
- Design and practice of retaining wall for medium and small coal storage bunkers 挡土墙在中小煤矿贮煤仓中的设计与实践
- Conference Rooms of Large, Medium and small and negotiation rooms for your use. 配备大中小会议室、洽谈室,供客户定期使用。
- Application advantages of FCMC vortex micro foam column floatation in medium and small coal preparation plants FCMC型旋流微泡浮选柱在中小型选煤厂的应用优势
- These are mine workers of a small coal mine in north-east of Yunnan. 云南滇东北部的小煤窑的矿工们。
- Medium and small coal enterprises strategic choices in circular economy circumstance 循环经济下中小煤炭企业的战略选择
