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- To make shaft coal cutting planning is a multi nodal decision making course for it's intricacy of influencing factor. 矿井采煤计划编制影响因素复杂,是一个多环节的综合决策过程。
- Mine rational drivage rate is a very important role in banlancing coal cutting and driving. 合理掘进率对矿井采掘平衡具有重要的作用。
- For coring crowns,electric coal drill bits,coal cutting picks,cone drill bits and scraping knife bitts,used in geological prospecting,coal mining and oil well boring. 适用于地质勘探、取心钻头、电煤钻、截煤机齿、石油牙轮钻和刮刀钻头。
- An improved mode of coal cutting is recommended aiming at the specifical status of surface collapse of coal field in Yanzhou city, and several control policies on restoration and reclamation of collapsing land are also put forward. 针对兖州矿区的具体塌陷状况提出了改进采煤方式、对塌陷土地进行恢复和复垦等几点防治措施。
- The developing direction of electrical control for domestic tunneller is raised with the analysis of the characteristics of the electrical control for continuous coal cutting made in USA. 通过对连续采煤机电控特点的分析，提出国产掘进机电控的发展方向。
- long and short knife interpenetration coal cutting “长”、“短”刀穿插割煤
- coal mining; coal extraction; coal cutting 采煤
- We need to replenish our stocks of coal. 我们需要再次补充煤的储备。
- Application: For delivery of water, mineral oil or waterbased hydraulic oil in the hydraulic system of hydraulic frames, combined coal cuttings in coal mine and constrction work macinery, etc. 用途：适用于煤矿液压支架、综合采煤机组等液压系统输送矿物油、水基液压油或水。推荐压力适用于脉冲少的工作条件。
- She piled on more coal before the fire go out. 在火熄灭之前她又加上些煤。
- I add the coal on the flame continuously. 我不断朝火里添加煤炭。
- They are ventilating the sap of a coal mine. 他们正在使煤矿坑道通风。
- Prohibition was laid on the export of coal. 禁止煤炭输出。
- Study of coal cutting mechanism of point-attack pick 镐型齿截煤机理研究
- He put a shovel of coal on to the fire. 他往火炉里加了一铲煤。
- That coal mine is no longer worked. 那个煤矿已经不经营了。
- We have enough coal to see the winter out. 我们有足够的煤过冬。
- Determination of Coal Impact Split Thickness of Impact Coal Cutting 冲击式采煤煤体冲击劈裂厚度的确定
- They eked out their coal by collecting firewood. 他们拣拾木柴以补充煤的不足。
- We had a big delivery of coal today. 今天我们收到大批订购的煤。
