He was also afraid he'd be useless as a coach, caving under the pressure and forgetting all we'd learned in our childbirth class.
他还担心自己无法完成指导的任务,在压力作用下忘记我们在分娩课上学过的一切。
The following research results are obtained: the top coal caving technique and increasing the resistance of the support can reduce the pressure on the coal wall.
研究表明:放顶煤开采、提高支架工作阻力可以减缓煤壁压力,煤体合理注水可以提高煤体黏聚力与抗剪强度,它们是防治极软煤层煤壁片帮的有效措施。
This paper illustrates the successful practice of using caving coal process in complex geological conditions, such asi impact groud pressure, small fault, mining influence.
论述了在复杂地质条件地块(如冲击地压、小断层、受下伏煤层采动影响)采用放顶煤工艺的成功实践。
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