英语词汇“hard bottom”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	hard bottom
释义	hard bottom hard bottom [′härd ‚bäd·əm] (mining engineering) A condition encountered in some opencut mines wherein the rock occasionally does not break down to grade because of an extra-hard streak of ground or because insufficient powder is used.
随便看	riluzole rilw rily rilya r/im rim rim4 rima rimabotulinumtoxinb rimac rimacid rimacillin rima cornealis rimactane rimactazid rimadyl rima evstigneeva rimafen rima glottidis rimair rimantadine rimantadine hydrochloride rima oris rimap rima palpebrarum

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