英语词汇“principal mining level”的读音、翻译、释义、用法及例句-开邑网

词汇	principal mining level
释义	principal mining levelprincipal mining level1.■主要开采水平
随便看	materials usage price variance materials usage standards materials usage variance materials used summary sheet materials variances material symmetry material testing laboratory material testing machine material theory of value of money material time material trademark material transfer material transporting bridge material transport mechanism material tray material turnover material type material under-valuation adjusted material unity of the world material universe material usage price variance material usage ratio material usage variance material used as a soil corrective material utilization

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