裂缝的

The production performance of fractured wells is simulated with the Finite Element Method and the anchor rod model.

应用有限元法和锚杆模型对人工裂缝井的生产动态进行模拟。

The results show that the reinforcement on the plate angle is not sufficient concrete pouring is not even, early removal of mould is the main cause of cracks.

结果表明，板角部负筋配筋量不足、混凝土浇注不均匀、拆模过早是裂缝产生的主要原因。

Aran anticline in the plane C4 sub-mermber can be divided into three compound fracture system.

在平面上Aran背斜C_4亚段可以分成3个复合的裂缝发育系统。

Studied the crack control of this type aqueduct first time.

首次研究了三向预应力多侧墙渡槽槽身的裂缝控制。

It is my feeling that the ARTEMIS will be as necessary as the slit lamp in the ophthalmologist armamentarium, and will be found in every office.

因此我认为阿特美思将成为眼科的裂缝灯，在每一个诊室都可以找得到。

The manual and automatism measurement of these cracks are especially difficult because most of these cracks are on the bottom of bridges.

由于大多数桥梁的结构裂缝都主要产生在桥梁底部，使人工检测和自动检测都特别困难。

Especially cannot approximate the complicate boundary form of fractures.

特别是不能逼近裂缝复杂的边界形状。

Angular spectral is spectral value map formed by estimating semblable coefficients of fast and slow shear wave or the variation of amplitude ratio of fast and slow shear wave with times and angles at a specified space point based on semblable theory of fast and slow shear wave, the angle value of this space point at a given time can be got by picking the maximum of angular spectral; the study reveals that fast and slow shear wave with different polarization direction should be separated using different rotation formula, eight formulas of separating fast and slow shear wave using clockwise rotation and counterclockwise rotation have been derived, and gained energy assignment rule and phase coincidence rule, in real data estimation, the rotation formula used for separating fast and slow shear wave can be uniquely determined on the two discriminating rules. On the basis of semblable theory of fast and slow shear wave, the delay time corresponding to the maximum of semblable coefficients at a specified point in a given time window is the delay time of fast and slow shear wave, delay time section of fast and slow shear wave can be got by moving space point and smoothing time window. The vertical variation values of delay time of fast and slow shear wave reflect the effect degree of vertical fractured reservoir on fast and slow shear wave which is defined as anisotropic coefficient, and section map of anisotropic coefficient can be obtained.

角度谱就是利用快慢横波的相似性原理，在某一空间点求出快慢横波的相似系数或快慢横波的振幅比值随着时间和角度的变化而形成的谱值图，拾取其极大值就得到该空间点某一时间的角度值；在研究中发现分离不同偏振方向的快慢横波应该采用不同的旋转公式，推导出了利用顺时针旋转和逆时针旋转分离快慢横波的八个公式，并给出了能量分配准则和相位一致性准则两个判别准则，在实际计算中利用这两个判别准则能唯一地确定分离快慢横波的旋转公式；根据快慢横波的相似性原理，在某一给定点和给定时窗内最大相似系数对应的延迟时间就是快慢横波的延迟时间，随着空间点的移动和时窗的滑动就可以得到快慢横波延迟时间的剖面图；快慢横波延迟时间与慢横波传播时间的比值定义为裂缝密度，并求出了裂缝密度剖面图；快慢横波延迟时间纵向上的变化值的大小反映了纵向上裂隙层对快慢横波影响的大小，定义为各向异性系数，并求出了各向异性系数的剖面图。

Then, safety analysis method was constituted considered the typical damage of concrete beam bridge. 5. By amending the reduction rate of loading capacity used in Code for Maintenance of Highway Bridges and Culvers (JTG H11-2004), a new reliable index is presented in the same safety standard to reflect the relation between load and resistance. According to the basic principal of calibration method, the recommended gradation index was computed under various factors such as different load combinations, vehicle operating status and different failure modes. With these calculated numerical values, the calculated reliability indexes standard for the estimation of safety degree of in-service concrete girder bridge members was ultimately obtained.6. Based on the related standards and results on crack and displacement that cannot continue to loading at home and abroad, the evaluation grade of the concrete beam bridge is proposed by analogy.

针对材料和构件损伤对混凝土梁式桥抗力的影响，基于材料和构件层次典型损伤的修正计算公式，在结构既有以及时变抗力评估的概率模型基础上，通过误差传递公式获得抗力统计参数，对抗力进行修正，构成了考虑混凝土梁式桥典型损伤的安全性分析方法。5、依据校准法原理，将《公路桥涵养护规范》(JTG H11-2004)中不同类别承载力下降率转化为修改分项系数，分别计算了轴心受压、轴心受拉、受弯、大偏心受压、受剪构件在各种情况下的可靠指标，根据破坏类型对校准结果进行分析，提出了基于可靠度的公路混凝土梁式桥安全性评定等级。6、基于不能继续承载的裂缝和位移的相关国内外规范和研究成果分析，通过类比提出了混凝土梁式桥不能继续承载的裂缝和位移评定等级界限。

This paper firstly analyzes its reason, some main control ways, then come to the writer's view that we should make full use of supervision's experience on technique and management, control effetely from beginning, on-going, and end of project, and control from material, construction method , and give help to the contractor both on technique and finance. The writer's discussion basing on supervision control theory, detail introduces some quality control methods.

本文着重分析了在大体积混凝土工程中裂缝产生的原因，并指出易发生问题的几个关键环节，认为单一依靠承包单位的管理是不能保障这个关键分项工程的顺利实施，提出应当充分发挥监理企业在技术上和管理上积累的经验，从施工准备阶段入手，在事前、事中和事后等环节采取有效的控制措施，特别是对原材料严加控制，对施工方案认真审核，对关键的控制环节措施到位，从技术上、经济上帮助承包单位确定合理的施工方案，防止温度裂缝给工程带来的隐患，确保大体积混凝土的施工正常有序的进行。

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。