1) narrow-bore column
窄孔(径)柱
2) diminished column
窄柱
3) Hard-edge narrow slot aperture function
硬边窄缝光阑孔径函数
4) centre diameter of pin holes
柱销孔中心圆直径
5) narrow and small coal pillar
窄小煤柱
1.
During the period of caving coal mining,the coal tunnel pressure is greater with leaving narrow and small coal pillars,the support of driving tunnels along goaf is more difficult during the period of mining.
在放顶煤开采过程中,留窄小煤柱全煤巷道矿压较大,沿空掘巷在回采过程中支护较为困难,运输顺槽支护方式的确定更为显得重要。
6) narrow coal pillar
窄煤柱
1.
Numerical simulation on the principle of supporting roadway with narrow coal pillar;
窄煤柱护巷机理的数值模拟分析
2.
In order to solve this problem,this paper proposes that narrow coal pillars are to be left to protect the main drift or roadways.
针对薄煤层开采中,沿煤层开掘的巷道留煤柱护巷造成大量的煤炭储量浪费问题,提出留设窄煤柱维护大巷技术,巷道采用锚喷网支护,延长了矿井服务年限和提高了矿井整体效益,可在类似条件下推广应用。
补充资料：胎圈过窄、子口窄、圈窄等
分子式：
CAS号：
性质：又称胎圈过窄、子口窄、圈窄等。轮胎工业中指两胎圈宽度不一致的现象。
CAS号：
性质：又称胎圈过窄、子口窄、圈窄等。轮胎工业中指两胎圈宽度不一致的现象。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条