1.
The technology experience and economic result of strong and difficult collasp roof manage in Xinan Coal Mine are introduced.
介绍了新安煤矿在坚硬、难放顶板管理方面的技术经验及取得的主要技术经济效果。
2.
Study on Roof and Top-Coal Classification and Application in Fully Mechanized Top-Coal Caving Face;
综放面顶板（顶煤）分类及应用研究
3.
Study the technique of caving hanging roof in the condition of hard roof of room-and-pillar mining.;
房柱式开采坚硬顶板条件下悬顶放顶技术研究
4.
STUDY OF CONTROL CAVING METHODS AND REASONABLE HANGING ROOF LENGTH ON HARD ROOF
坚硬顶板控制放顶方式及合理悬顶长度的研究
5.
The first caving roof sections in hard coal layers can effectively reduce the pressure during the course of caving and guarantee safe production and efficiency.
坚硬煤层顶板分段初次放顶,能够有效缓解放顶期间的顶板压力,保证安全生产,提高生产效率。
6.
Technology and Control of First Roof Caving at Fully Mechanized Coal Face with Hard and Massive Overlying Strata
厚层坚硬顶板综采工作面初次放顶技术管理
7.
a carrier for holding skis on top of a vehicle.
车辆顶部用来放雪撬的板子。
8.
Fleas are trained by putting them in a cardboard box with a top on it.
训练时，跳蚤被放在有顶盖的纸板盒里。
9.
Put the slats on the roof so that they lap over.
把石板瓦安放在屋顶上，使之相互叠盖。
10.
Put the slates on the roof so that they lap over.
将石板瓦鳞比地排放在屋顶上。
11.
Roof breaking law along top-coal caving face
综放开采沿工作面倾向顶板垮落规律
12.
Pressure releasing and gas drainage with long bore hole in roof overburden of fully mechanized caving face
综放面顶板覆岩走向长钻孔卸压抽放瓦斯研究
13.
Study on Top-Coal Caving and Drawing Capability and Roof Control in Hard Coal and Hard Roof Short Sub-Level Caving Fully Mechanized Face
“两硬”短工作面综放开采顶煤冒放性及顶板控制技术研究
14.
Stope Roof-control techniques of the Seventh Difficult-excavated Ore Body in Dongxiang Copper Mine
东乡铜矿Ⅶ号难采矿体采场顶板控制技术
15.
Study and Application on Stability of Hard and Massive Overlying Strata in Fully Mechanized Sublevel Caving Face;
综采放顶煤采场厚层坚硬顶板稳定性分析及应用
16.
a tablet placed horizontally on top of the capital of a column as an aid in supporting the architrave.
一块作为楣梁支撑物水平放在圆柱顶部的平板。
17.
Application of Technology of High Gas Cannon Picking Roof Perforate Gas Administer
高瓦斯炮放面顶板钻孔法瓦斯治理技术应用
18.
Dynamical Geology Evaluation and Controlling Methods of the Roof Stability for Longwall Top-coal Caving Face;
综放面顶板岩体稳定性地质动态评价及控制