level-pillar 水平阶段矿柱
high-level pillar 高阶段矿柱
High level pillar mining 高阶段矿柱回采
high level pillar recovering 高阶段矿柱回采
Sub-level room-pillar with bolting 锚杆护顶分段房柱法
Livestock husbandry has become the pillar industry of country economy in Huidong County, but with low level.
会东县畜牧业已经成为农村经济的支柱产业,但产业化经营水平低。
The stress level in elastic zone and the stress distribution in strain-softening zone are not affected by the pillar thickness. The former is related to the axial strain of the pillar.
矿柱弹性区的应力水平及软化区的应力分布不受矿柱宽度的影响,前者与矿柱的轴向应变有关。
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