英语词汇“second mining”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	second mining
释义	second mining second mining [′sek·ənd ′mīn·iŋ] (mining engineering) In underground coal mining, a procedure in which the pillars left for roof support are removed as mining operations move back out of the previously mined area.
随便看	chisolm trail chisombop chisox chispa chi square chi-square chi-square (chi2) distribution chi-square (chi2) test chi squared chi-squared chi-squared automatic interaction detector "chi-squared" distribution chi squared distribution chi-squared distribution chi square distribution chi-square distribution "chi-squared" test chi squared test chi-squared test chi-square significance test chi-square statistic chi-square statistics chi square test chi-square test chi-square tests

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