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- middle rock pillar 中间岩柱
- This paper provides a simplified mechanical treatment for coal / rock pillar and roof in underground mining. 本文对地下采矿中遇到的煤岩柱及顶板进行了力学的简化处理;
- One day, when he was plowing with his body tied to a hawser hung under the rock pillar of the waterfall, he heard his mother's voice calling for him. 一个名叫大乘的人，自幼父母双亡，靠采卖蘑菇为生。
- Alan looked neither to the right nor to the left, but jumped clean upon the middle rock. 艾伦没有朝右边看，也没有向左边瞧，而径直跳上中间那块岩石。
- Mining on conditions that ponding at the same layer of Yongquan mine area,the method and relative technical parameters of leaving the safety protective coal rock pillar are introduced. 介绍了阳泉矿区在有同层积水威胁情况下开采,留设安全保护煤岩柱的方法和有关技术参数。
- In order for safety, it requires to accurately calculate the shortest net rock pillar between two roadways for guiding drivage construction when the interval between two roadways is very short. 为了确保安全,当两巷道之间的距离很近时,需要准确地计算出两巷道之间的最短净岩柱来指导掘进施工。
- From the cataestrophic theory, applying related equations, this paper discusses on physical mechanism of unstable coal / rock pillar, and the conditions of the unstability are also given. 从突变理论出发,引用煤岩损伤本构方程,讨论了煤(岩)柱失稳的物理机制,并给出了煤(岩)柱失稳的条件。
- rock pillar body partition modeling 岩柱体分区法
- Car commercials put their vehicles in the most improbable of places: sides of cliffs, tops of rock pillars, middles of deserts. 汽车的广告老是把车子摆在不切实际的地方，例如悬崖边、岩柱顶端或是沙漠中央。
- Mine pillars and rock pillars to be preserved as specified in the mining designs shall, within the prescribed period of time, be protected and may not be exploited or damaged. 第十四条矿山设计规定保留的矿柱、岩柱,在规定的期限内,应当予以保护,不得开采或者毁坏。
- Confirming Least Rock Pillar Thickness in Cross-cut Coal Uncovering 石门揭煤最小预留岩柱厚度的确定
- I'm sick of being piggy in the middle all the time. 我腻烦了总是夹在争吵双方的中间。
- He planted roses in the middle of the garden. 他在花园中间种上玫瑰。
- He admires the chivalry of knights in Middle Ages. 他很佩服中世纪武士的侠义精神。
- It has its roots deep in the Middle Ages. 它起源于遥远的中世纪。
- My wheel twisted off in the middle of the car race. 我的车轮子在汽车比赛中途脱掉了。
- We have studied botany in our middle school. 我们在中学的时候就学过植物学。
- There are 300 students or so in this middle school. 这所中学大约有300个学生。
- He was appointed the rector of the middle school. 他被任命为那所中学的校长。
- She has dropped out in the middle of the race. 她中途退出比赛。
- 今日热词
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- 深远海浮式风电平台 - deep-sea floating wind power platform
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- 京雄高速公路 - Beijing-Xiongan expressway
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- 农业及相关产业增加值 - the added value of agriculture and related industries
