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- four strata structures 四层结构
- Meteorite strike events have severe, great and long-term impact on strata structure of the earth surface. 历史上发生的陨击事件对地球表面岩层构造产生了极其严重、深刻和长远的影响。
- A detection method of roof strata structure is put forward and the application of the method in Guhanshan coal mine in Jiaozuo is introduced. 提出了一种顶板岩层结构探测方式,介绍了该探测方式在焦作古汉山煤矿应用的情况。
- Arid, from the point view of MT methods, given is the formulas for forward problem to EDA included two strata structure. 然后，从大地电磁测深法的角度，详细地推导了双层地层（含裂隙）结构的视电阻率正演公式。
- Because of strata dip offsets, fractures in goaf area, result in primary strata structural damages, thus geophysical characteristic changes will be along with. 采空区由于原始地层错动、裂缝,地层结构破坏,其地球物理特性也发生了变化。
- We concentrate more on the situation of peasant, workers, and property class and interests conflicts that may arise between the four stratums. 由于文章的篇幅和时间关系,只是对农民阶层,工人阶层, 资产所有者阶层的情况作了主要分析,其它没有作说明的部分留待以后进一步研究。
- According to the field observation and theoretical research,the overlying strata structure and mining pressure control techniques for sub-level longwall face surrounded by mined areas were presented. 论文通过理论和实践研究,提出了四面采空“孤岛”采场的顶板结构和相关矿压控制技术。
- However, everything has its two sides, Throughout the course of Chinese social stratum structure at this stage, a series of negative factors threaten the social stability as a necessity. 然而,任何事物都具有两面性,现阶段中国社会阶层结构在变迁进程中所产生的一系列负面因素,必然会威胁到社会的稳定。
- Since the reform and opening on, our country has greatly changed in the respects of politic、economy、social organization and social stratum structure and so on, and engendered new social ranks. 摘要改革开放以来，我国在政治、经济以及社会组织和社会阶层结构等方面都发生了很大变化，产生了新的社会阶层。
- The basic conditions of landslide development are the stratum structure and the tectonic geology mainly, and the induced factors are the rainfall, impoundment, the activities of human being and so on. 分析认为，滑坡发育的基本条件有软硬相间的有利地层结构、地质构造条件等；滑坡发育的诱发因素有降雨、水库蓄水及人类活动等。
- It is clear to all of us that two plus two is four. 二加二等于四对我们大家都很清楚。
- He wove four plots together into a novel. 他把四条情节编成一部小说。
- We have tea at four o'clock in the afternoon. 我们在下午四点钟喝茶。
- The town boasts four swimming pools. 这座城镇以拥有四个游泳池而自豪。
- Our football team won by four goals to nil. 我们的足球队以四比零取胜。
- He lay back and hit the ball for four. 他向后弯身击中球，得了4分。
- I was clean broke in less than four days. 不到四天我就一个钱也没有了。
- I'll look out for you at about four. 我4点钟左右找你。
- He showed us four case studies of disturbed girls. 他给我们看了4位精神失常姑娘的病历。
- My house is four miles distance from the sea. 我家离海四英里。
