mine entrance

This text discusses several approaches to improve mine integrated unilateral entrance combining the actual state of pair mining group.

本文结合双矿集团实际状况论述了提高综合单进的途径。

First order slip velocity and jump temperature boundary conditions are employed to deter-mine the developing flow and heat transfer in the entrance region of a microtube.

基于圆形微通道的能量守恒及热传导方程，在考虑速度滑移和温度跳跃的情况下，利用逆解法得到了一个热充分发展的温度场计算式。

Anxious relatives of the workers waited for news alongside dozens of ambulances at the mine entrance, the state-run Anatolia news agency reported.

国营安纳托利亚通讯社报道说，被困工人的家属在煤矿入口处焦急等待，数十量救护车也在入口处随时待命。

One edge of the garden abutted on an old entrance to the mine

花园的一侧紧靠着矿井的旧入口。

One edge of the garden abutted on an old entrance to the mine.

花园的一侧紧靠着矿井的旧入口。

The utility model discloses a hydraulic revolving safety door used at mine entrance and belongs to the technical field of equipment for mine safety.

本实用新型公开了一种煤矿井口用的液压旋转式安全门，属于煤矿安全设备技术领域。

Conclusion The cumulative incidence of pneumoconiosis in pure digging and pure mining showed a declining trend as the years of mine entrance went on, and the decreasing degree of pure mining was lower than that of pure digging.

结论煤矿纯掘与纯采工种尘肺累积患病率随入矿年代的后移呈逐渐下降趋势，纯采工种的逐期下降幅度较纯掘低。