Roadside support technology is a key technology in coal mining, safe, rational and effective roadside support can guarantee high output and efficiency.
巷道支护技术是煤炭开采中的一项关键技术，安全、合理、有效的巷道支护是保证矿井高产高效的必要条件。
Fully mechanized caving mining has became mining technology of high output and efficiency in thick coal seam mining.
综采放顶煤技术已成为厚煤层开采的高产高效采煤技术。
ZZS6000/17/37A four pillars chock-shield is fully-mechanized support equipment that is designed for high output and efficiency mine.
ZZS6 0 0 0 / 17/ 37A型四柱支撑掩护式液压支架是专为“高产高效”矿井设计的综采支护设备。
The greater mining height mining is higher in resource recovery rate, better in coal quality, high in output and efficiency and good economic benefit.
大采高开采资源回收率高，煤炭质量好，能实现高产高效，经济效益好。
The relations between power output and efficiency and the effect of heat leak and other parameters on the performance of the combined cycle were analyzed by detailed numerical examples.
同时由数值计算分析了热漏等循环参数对循环性能的影响，以及循环功率与效率间的关系。
The results show that all kinds of inlet air cooling technology for gas-turbine may improve its output and efficiency, but it is necessary to combine with the concrete conditions to select the...
结果表明，不论采用何种进气冷却技术都可以有效地提高燃气轮机的出力和效率，但对于不同地区、不同运行条件的燃气轮机，应根据实际条件选择进气冷却方式。
The results show that all kinds of inlet air cooling technology for gas-turbine may improve its output and efficiency, but it is necessary to combine with the concrete conditions to select the...
结果表明，不论采用何种进气冷却技术都可以有效地提高燃气轮机的出力和效率，但对于不同地区、不同运行条件的燃气轮机，应根据实际条件选择进气冷却方式。
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