run of mine coal

基本解釋

This text explains to Xutuan coal mine west breeze well and main well a method, error margin for of run-through measuring analysis with anticipate.
介紹了許疃煤礦西風井與主井之間的貫通測量的方法、誤差分析和預計。
According to characteristics of the coal mine production, the article analyses the power supply system in coal mines and discusses the economic run mode of the transformers and the lines.
根據(jù)煤礦生產(chǎn)的特點，對煤礦供電系統(tǒng)進行了分析，對變壓器、線路的經(jīng)濟運行方式進行了探討。
The power run steadily, and its brake function was improved apparently, and satisfied with require of safety in production of coal mine.
改進后的制動電源制動性能有了明顯提高，運行穩(wěn)定，能滿足煤礦安全生產(chǎn)的要求。