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1)  Direct Pushing
直顶
2)  immediate roof
直接顶
1.
It was point out that main roof can form the voussoir beam structures in the inclination, and immediate roof located at the middle\|lower section of a longwall face probably forms a voussoir arch structure with a small scale because of waste filling.
提出了大倾角条件下老顶岩层在运动中易于形成倾斜砌体结构板大结构 ,直接顶岩层则因上段冒落矸石充填 ,在采场中下段形成砌体梁小结构 ,并探讨了中下段小结构平衡的极限条件和结构失稳形式 。
2.
The main roof applies a given deformation on the immediate roof.
根据砌体梁理论,上覆岩层破断以后仍可以形成能够承受载荷的稳定岩体结构,因此老顶通常以给定变形的方式作用于直接顶。
3.
Deformation and failure features at different heights of immediate roof in working face are analyzed by using numerical calculation method.
运用数值计算方法分析了采场不同高度直接顶的变形破坏特征,提出直接顶的“临界高度”(hcr)概念,将直接顶按临界高度进行分类,指出当直接顶高度Σh ≥hcr 时,不能单纯以顶板下沉量来判别顶板是否稳定,而要综合考虑端面顶板的稳定性。
3)  direct roof
直接顶
1.
Similar simulation research on arch mechanism of direct roof falling under fully mechanized top coal caving face;
综放采场直接顶垮落成拱机理相似模拟研究
2.
On the basis of analysis of the reciprocity mechanism of original pressure and direct roof, the author analyzes the setting methods of appropriate original pressure of powered support is put forward finally.
在详细分析液压支架初撑力与直接顶相互作用机理的基础上,对支架合理初撑力的确定进行了分析研究,并提出了合理支架初撑力的确定方法。
4)  lifting vertically
垂直顶升
5)  vertical propping
垂直挑顶
1.
Taking the cross cave propping in Hanguguan Tunnel of passengers special line on Zhengxi railway,this paper introduces a new construction technique of propping- vertical propping method.
文章以郑西铁路客运专线函谷关隧道横洞挑顶为例,介绍了一种新型挑顶施工工艺——垂直挑顶法。
6)  tip diameter
顶圆直径
1.
The maximum tip diameters of flat top Chainwheels among ISO,ANSI and GB are different.
关于平顶链链轮最大顶圆直径的规定,ISO、ANSI和GB等标准不尽相同。
补充资料:贬江陵途中寄乐天、杓直、杓直以员外郎判盐
【诗文】:
想到江陵无一事,酒杯书卷缀新文。紫芽嫩茗和枝采,
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【注释】:



【出处】:
全唐诗:卷412-33
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
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