sublevel caving meaning in English

分段崩落采矿法

Study of sublevel caving hydraulic support in gently inclined
厚煤层放顶煤支架的研制
Trial research on fully - mechanized sublevel caving mining under river
河下厚煤层综放开采试验研究
Development of mcai courseware for sublevel caving
课件的开发
Design of zfq280 light sublevel caving hydraulic support in beizao coal mine
280轻型放顶煤支架设计
Fully mechanized sublevel caving method adopted in the dynamic pressure condition
动压条件下的综放开采方案

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