裂缝的

Forecasting crack and it's distribution mode is almost equivalent to forecasting oil and gas, so it is important to correctly understand underground crack in exploratory development.

可以说对裂缝及其分布规律的预测几乎等价于对油气的预测，所以对地下裂缝的正确认识对油气的勘探开发具有重要的意义。

Detailed study was also preformed on remedial and maintenance methods for broken crack, advanced countermeasure based on the grade of broken crack.

同时对水泥混凝土路面的裂缝的维修处理方法进行了系统的研究，根据裂缝的破坏程度，总结提出了相应的处理措施。

This thesis utilizes the constitutive relationship of the concrete in one way Tension Compression and plain cross supposal It also transplants the basic supposal in Soil Mechanics to the calculation of loading crack , aiming at probing the calculating method of the width of the crack of reinforced concrete component

本文利用单向受拉，受压砼的本构关系和平截面假定，将土力学中的基本假定移植到荷载裂缝的计算中去，从而导出钢筋砼构件裂缝宽度的计算方法。

With the photoelastic coating method, the process of crack propagation was systematically observed.

本文最后用光弹性贴片法，对混凝土预制裂缝的起裂、稳定扩展直至失稳破坏的全过程进行了系统的研究，得到了混凝土裂缝扩展全过程的完整而直观的观测结果。

The paper has studyed the characteristics of seismic wave field in the media of EDA, and has made out three aspects of numerical simulation on wave field features by using definite difference: The simulation of P-wave ground seismic logs in the media of EDA; the diagnostic complication of seismic wave field in cranny belts due to the scattering of cranny wrappage; the decreasing of amplitude and the reversing of polarity of the wave reflected on not only the top but also the bottom of fracture zone.

2通过罗67井岩芯的系统研究表明，泥岩的横波和纵波速度随温度增大而降低，一定温度条件下随为压力而增大；泥岩裂缝的测井曲线一般表现为高电阻率、负自然电位异常、低声波时差，利用该规律可以半量定地识别划分泥岩裂缝储层特征，为解决不同度数据的相互匹配这一重点和难点问题提供了思路和方法。

This paper introduces some problems related to the crack control of the concrete box girder in the construction of railway passenger line, and connecting with the actual construction example of the box girder of Yongtaiwen Railway Passenger Line, probes into the geneses of the cracks on concrete box girder,and puts forward some corresponding control measures.

介绍了铁路客运专线箱梁的施工过程中，有关箱梁混凝土的裂缝控制问题，结合甬台温铁路客运专线箱梁的施工实例，探讨了箱梁混凝土裂缝的成因，提出了相应的控制措施。

In recent years, as the economic is developing, the buildings are getting higher and higher, and mass concrete baseplate application of the structure is more and more widely, the mass concrete baseplate are often cracked by temperature stress in practice, therefore, research of the mass concrete baseplate will become more and more attention.

随着经济的发展，建筑物高度越来越高，大体积混凝土底板结构的应用越来越广泛，但由于温度应力的作用，大体积混凝土底板的裂缝在工程实践中屡见不鲜，因此对大体积混凝土底板温度裂缝的研究将越来越受到重视。

Aiming at filler wall quality problems,it analyzes the chief origins of the filler wall crack,brings forward corresponding prevention measures,overcomes the filler wall crack quality control problems basic with the reinforced management in construction,and increase the quality requests of housing.

针对填充墙体的质量问题，分析了填充墙体产生裂缝的主要原因，提出了相应的防治措施，并在施工中加强管理，基本克服了填充墙体裂缝的质量控制难题，提高了住宅楼的质量要求。

From two aspects: design and construction the reasons caused the cracks produced in floor slab are analyzed;at the same time corresponding treatment measures are proposed as well as matters deserving attention in construction process.

从设计和施工的角度对楼板裂缝产生的部分原因进行了分析，阐述了施工过程中应注意的问题，指出混凝土楼板裂缝的处理措施，指出在设计和施工过程中，需按规范进行，以保证工程质量。

Combined with practical engineering,the author introduces the selection of raw materials and concrete mix proportion,construction condition and crack distribution of the engineering,analyzes the causes of temperature shrinkage cracks in the concrete of pier,and proposes measures to control them,in order to ensure the quality of railroad bridge engineering.

结合工程概况，对该工程的原材料及混凝土配合比选用、施工情况及裂纹分布情况进行了介绍，分析了墩身混凝土的温缩裂缝产生原因，并提出了控制裂缝的对策，以保证铁路桥梁工程的质量。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。