3) underground multilayer complex goaf
地下多层复杂采空区
4) complex roof
复合顶板
1.
Roof control and practices on coal mining under complex roof;
复合顶板下采煤的顶板控制与实践
2.
Numerical analysis on rational support for complex roof of coal mining face in No.3 seam of Liuquan Mine;
柳泉煤矿3煤工作面复合顶板合理支护方式数值分析
3.
Technical analysis and prevention of roadway roof-fall accident under conditions of complex roof;
复合顶板条件下巷道冒顶事故技术分析及预防
5) compound roof
复合顶板
1.
Talking about the application of bolting support under the conditions of compound roof in coal road tunnling;
锚杆支护在复合顶板下煤巷掘进中的应用
2.
Application of bolt net bar supporting in compound roof coal-roadways;
锚网带支护在复合顶板煤巷中的应用
3.
Reserving space for lane along the tunnel under the condition of soft coal bed,compound roof supports and protections;
松软煤层复合顶板联合支护 沿空留巷探讨
6) composite roof
复合顶板
1.
Bolt supporting technique for composite roof in Tunlan mine;
屯兰矿复合顶板巷道锚杆支护技术与实践
2.
Under the condlition of medium-thick seam composite roof,the small pillars size and roadways support parameters are reasonably determined.
在中厚煤层复合顶板条件下,合理确定小煤柱尺寸及巷道支护参数,可提高煤炭回收率,保证巷道正常掘进和在服务期间内的使用。
补充资料：薄层棒色谱法
分子式：
CAS号：
性质：又称棒色谱(rod chromatography)。在石英棒或石英管外壁上涂布一薄层物质作为固定相的薄层色谱法。
CAS号：
性质：又称棒色谱(rod chromatography)。在石英棒或石英管外壁上涂布一薄层物质作为固定相的薄层色谱法。
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