1) Artificial compound roof
人工复合顶板
2) artificial roof
人工顶板
3) 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
4) 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
5) 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。
6) combined roof
复合顶板
1.
Acoording to the practice of mining combined roof seam in Xingan Coal Mine,Hegang Mining Group Comp.
根据鹤岗矿业集团公司兴安煤矿多年来对复合顶板煤层开采的实践,分析复合顶板冒落特点和原因、控制冒顶的基本原理、预防冒顶的措施。
2.
According to the"maintaining"principle of combined roof,the characteristic and rule of roof separation,caving and collapse of the mined face in 3 Coal of Liuquan Colliery by numerical simulation with RFPA2D.
按照复合顶板以“护”为主的原则,应用岩石破断分析系统(RFPA2D),通过数值计算得出了柳泉煤矿3煤工作面复合顶板离层、冒落、垮落的特征和规律,确定了工作面支柱的合理工作阻力和支护密度,最大限度地减少了压、漏、推冒顶事故的发生,取得了良好的经济效益。
补充资料：人工受精与人工授精
人工受精与人工授精
artificial fertilization and artificial insemination
我国学者把“人工受精”与“人工授精”两名词区别开来：前者指人工体外受精而言，后者指把精液注入到妇女的阴道或宫颈管、宫腔内，使精、卵在体内相遇。人卵体外受精与胚胎移植后出生的婴儿俗称试管婴儿。
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