u bolt u 形螺栓 ; 马蹄螺栓
U-bolt U 形螺栓
clevis bolt U 形螺栓
U U-bolt U 形螺栓
Spring U-bolt U 型螺栓
U-bolt U型螺丝 ; 钢板U型螺栓 ; 形螺栓 ; U形螺栓
u bolt 骑马螺栓 ; U型螺栓 ; 马蹄螺栓 ; U形螺钉
U-type fastening bolt U 型扣轨螺栓
U bolt plate U 形螺栓垫板
U bolt plate 形螺栓垫板
For rock roadway layout layer, the necessity and feasibility of using nude alley, a hell of arch, the U-steel shed, bolt net and spraying and other forms of support are expounded.
针对岩巷布置层位,阐述了采用裸巷、砌碹、u型钢棚、锚网喷等多种支护形式并存的必要性与可行性。
Effects of column stiffeners, bolt arrangement, bolt number, U-steel width and U-steel extended length are studied.
研究了柱加劲肋、螺栓排列、螺栓数目、槽钢宽度和槽钢下伸长度等的影响。
The mill comprises roll changing hydrocylinder (1), with rolling mill group (3), roll changer (2), post (4), worm wheel lifting gear (5), U-shaped frame (7), rotation ear (8) and bolt (9).
其特征在于本轧机包括换辊液 压缸(1)、换辊小车(2)、轧钢机辊组(3)、立柱(4)、蜗轮升降机构(5)、U型 架(7)、转动转耳(8)、连接螺栓(9);
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