Control unit with preset lifting height and automatic stop fitted at the left pillar.
控制单元设有预设的举升高度，左柱上安装有自动挡块。
This paper discusses the problem of the reinforced concrete pillar constructing, its quality requirement and control measure.
本文论述了钢筋砼构造柱在施工中易出现的问题以及质量要求和控制措施。
Disadvantages of sublevel caving without sill pillar lie in high ore loss and dilution as well as difficult control of ore loss and dilution.
无底柱分段崩落采矿法存在损失贫化大和损失贫化难以控制的缺点。
Cut-off grade method has been used to control the ore drawing in non-pillar sublevel caving mining both in and outside China.
采用无底柱分段崩落采矿法，国内外一直采用截止品位放矿法来控制出矿。
The control point symbolized the establishment used the deep pile to force to the center to observe the way which the pillar and the ordinary monument unified;
控制点标志设置采用了深桩强制对中观测墩与普通标石相结合的方式；
The control point symbolized the establishment used the deep pile to force to the center to observe the way which the pillar and the ordinary monument unified;
控制点标志设置采用了深桩强制对中观测墩与普通标石相结合的方式；
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