In situ measurements verify the above by observing the confined water intruding up into the coal floor,the protective strata,before mining.This paper considers the secondary stress as the conditi...是什么意思_In situ measurements verify the above by observing the confined water intruding up into the coal floor,the protective strata,before mining.This paper considers the secondary stress as the conditi...在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句