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。

youdao

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。

youdao

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。

youdao

Of course, measuring the output and efficiency of public services by the numbers of people they deal with is a pretty crude method.

ECONOMIST: Health and education

Second, in the 1970s there was a big gap between the quality of the output and the efficiency of, say, Japanese carmakers and their American peers.

ECONOMIST: The gods that have failed��so far

By the same token, renewable technologies are following similar output efficiency and cost reduction curves, while growing more quickly than most optimistic projections of just a few years ago.

FORBES: If America is the New Saudi Arabia, What Does That Mean for Our Energy Future?