These results support the findings of the modified spray system studies conducted earlier at different mines in Illinois on four occasions and the modified scrubber system field evaluation studies.
这些成果撑持地成果，修正喷淋系统起初停止地研讨在分歧地地雷在伊利诺伊州和四次修正洗濯舷领域评价研讨。
The resource support capacity of mines depends on many factors such as production capacity, ore grade and available reserve.
矿山资源保障能力的大小受生产能力、矿石品位以及保有储量等多种因素的影响。
This research achievement has validated the rationality of the original support scheme and also provided a theoretical basis for the anchoring support scheme design for other metallic mines.
该研究成果验证了原支护方案的合理性，也为其他金属矿山锚固支护方案设计提供了理论依据。
Owing to the less common distribution of layered roof in metal mines, the research of the support of hard rock layered roof is relatively less and still at the initial stage.
由于金属矿层状顶板分布较少，故硬岩层状顶板的支护研究也相对较少且处于起步阶段。
Owing to the less common distribution of layered roof in metal mines, the research of the support of hard rock layered roof is relatively less and still at the initial stage.
由于金属矿层状顶板分布较少，故硬岩层状顶板的支护研究也相对较少且处于起步阶段。
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