... 劈片光度计 wedge photometer 劈积 wedge product 劈形狭缝 wedge slit ...
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slit wedge type rock bolt 楔缝式锚杆
slit rod-and-wedge-type bolt 楔缝式锚杆
slit wedge tubing 管缝式
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The paper introduced the principle and methods of supporting combined the slit wedge bolt in small diameter with steel reinforcement in roadway with compound roof, and obtained economic effects.
介绍了回采巷道复合顶板条件下采用小直径管缝式锚杆加钢筋梯式组合网支护的原理、方法和取得的经济效果。
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