run of mine coal

基本解释

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.
介紹了許疃煤鑛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.
根據煤鑛生産的特點，對煤鑛供電系統進行了分析，對變壓器、線路的經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.
改進後的制動電源制動性能有了明顯提高，運行穩定，能滿足煤鑛安全生産的要求。