英语词汇“sub-level caving mining”的翻译、意思、用法、释义-英汉汉英双解词典-爱贷网

词汇	sub-level caving mining
释义	sub-level caving mining 放顶煤开采
随便看	closed solid control system closed solids control system closed solid sphere closed solubility curve closed sounding device closed source closed-source closed sowing closed space closed spaced triode closed space graph closed-space tunnel closed spacing closed spanner closed specification closed speed loop closed sphere closed spherical curve Closed Spinal Bifida closed spiral array closed-spiral auger closed split closed spring closed square cavity closed squeezing shield