The main technology to realize high production and high efficiency in abroad is fully mechanized long-wall mining for a single seam or room-and-pillar mining.

国外高产高效矿井建设是以单一煤层长壁和房柱式综合机械化为主要开采技术。

youdao

During the drivage of main-gate in long-wall face with fully mechanized caving mining, the gate is hard to support due to its loose and broken roof, large cross-section and long span.

在综采放顶煤工作面顺槽掘进过程中，由于顺槽煤层顶板松动破碎，并且顺槽采用矩形断面，顶板跨距较大，不利于巷道支护。

youdao

It was succeeded in practical application. It is an useful exploration for the roadway stability control of fully-mechanized top-coal caving long-wall face in soft and thick coal seam.

并成功进行了实践应用，为进一步完善松软厚煤层长壁综放工作面顺槽稳定性控制理论技术体系进行了有益探索。

youdao

In the long run, we want The Wall Street Journal and so I guess that-- we just have to accept that.

但从长远来说,我们需要《华尔街日报》,所以我想,我们必须得接受

耶鲁公开课 - 金融市场课程节选

One of them is long-time Wall Street figure and investor ace Martin D.

FORBES: Expect Market Leadership Change Away From Defensives To Healthcare, Energy And Tech

In previous articles, I outline this writing on the long-term wall. (Most recently, see Tim Cook Has No Idea How to Move Forward With Apple TV, but also see more bullish takes, such as Microsoft Can Beat RIM, but Stands No Chance Against Apple).

FORBES: Apple Fine Without Jobs? Think Different

Perceptive Pixel's 8-foot-long Multi-Touch Collaboration Wall.

FORBES: Magazine Article