井下的例句大全

The author gives a detailed analysis about automatical collection for underground open channel flow and pipeline flow. Parshall flume and Manning formula are studied for open channel flow. 3.

对井下明渠流量自动采集与管道流量自动采集进行了详细的阐述，对于明渠流量自动采集主要研究了其中的巴歇尔槽和曼宁公式。

A way to keep economic operation for chief draining pump in coal mine underground

煤矿井下主排水泵保持经济运行的途径

This paper also carefully introduces a way and path to keep economic operation for chief draining pump in coal mine underground.

详细地阐述了保持煤矿井下大泵经济运行的途径和方法。

Research on the Location Approaches of Miners Based on EMW Ranging

基于电磁波测距的井下人员定位方法研究

The new bottom hole control valve design.

新型井下采油控制阀设计.

But you are evidently in sore trouble and distress, so I will not desert you.

但你正处在危难中, 我不能落井下石.

If a man once fall all will tread upon him.

落井下石.

B : Stop rubbing it in, OK?

别落井下石了, 好 吗 ?

Inspired by the successful test of Enhanced Coal Bed Methane ( ECBM) by means of gas injection, the gas injection technology was firstly applied to accelerate coal seam methane emission and drainage in underground coal mine.

受煤层注气提高煤层气产出率（ECBM）试验成功的启发，首次成功地将煤层注气驱替技术用于煤矿井下注气促排促抽煤层瓦斯的工程技术领域。

He worked all his life down the pit.

他一辈子在矿井下工作.

Construction Technology to Pressurized Seal High Pressure Gas and Sulphuretted Hydrogen Gas in Underground Mine

煤矿井下带压封堵高压瓦斯及硫化氢施工技术

The QoS Design of Embedded Network Outstation Used in Underground

嵌入式井下网络分站的QoS设计

A down-hole autotracking well pumping unit different from the conventional pumping unit was designed.

针对抽油技术的现状和存在的问题,设计了一种不同于有杆抽油方法的井下自动跟踪式抽油装置.

Study on the current fault protective system in underground LV cable networks

煤矿井下低压电网电流故障保护系统的研究

It can be used to mine and also be for other metal mines and tunnel construction.

它既可用于煤矿井下,也可用于金属矿山以及其他隧道施工.

The wet multi-disc brake is a new brake widely used in construction and underground mining machineries.

湿式多盘制动器是一种广泛用于工程机械及井下矿山设备的新型制动器.

When mining coal in mine, danger of inflammable explosive damp exists all along, once damp explosion accident occur, normally, it can cause disastrous consequence.

在井下煤炭开采过程中，易燃易爆气体瓦斯危害始终存在，而瓦斯爆炸事故一旦发生，一般会造成灾难性的后果。

The valve assembly herein discussed is mainly composed of valve, valve seat, piston, spring and rod.

防止清蜡热液渗入地层的新型井下阀装置主要由阀门 、 阀座 、 活塞 、 弹簧和连杆等组成.

Application of DTx Technology to Mine Underground Communication

DTx技术在井下通信中的应用研究

By using visual tools of JDI the relative convergence area of seismic events in initial mining district is delineated combining with the causes according to practical mining underground.

利用可视化工具JDI对事件的相对集中区域进行圈定，并与井下生产活动相结合，分析原因；