查询词典 crack a book

Self-fluxing Fe-Cr-Ni-B-Si alloy prowders are laser clad on medium carbon steel substrate of dimensions 80×35×10mm〓. The investigation results of this clad layer are: micro-defects, micro-cavity and occluded forin substance, are the micro-cracks and crack resourses in clad layer; crack of coating propagates along the boundary of two kinds of eutectic sutructure; The included angle θ between the cracking direction and laser scanning direction in multitrack overlapping clad is smaller than that in one-track clad because of crack propagating along crystalline growth direction and crystalline direction in overlapping zone being different from it in one-track clad.

在调质态的45〓钢表面，采用预置粉末法进行FeCrNiBSi合金的多道搭接激光熔覆，对其熔覆层进行分析表明：多道搭接激光熔覆层裂纹扩展方向与激光扫描方向间的夹角θ与单道熔覆时相比明显变小，前者θ0°，后者θ角基本都为90°，这主要是因为多道搭接时，搭接区结晶方向发生了变化以及裂纹沿结晶方向扩展所致；激光熔覆层裂纹大多是以覆层与基材交界面的孔洞、熔覆层内不同方向共晶团间的显微缩孔、夹杂物的边界等三种显微缺陷作为裂纹源，并沿低熔点物相形成元素偏析造成弱化膜的共晶团界面扩展延伸。

The VCL method and the displacement method are used to calculate the Stress Intensity Factors of semi-elliptical surface crack at the root of pipe screws, on the basis of which a simplified calculating model for screws contact is put forward so as to analyse the fracture intensity for oil drill pipe screw coupling. For the semi-elliptical surface crack with different shape and deep ratio at the root of female and male screws and the corner of male flange, the SIF has been studied systemically under inter-pressure, tension, bend and torsion loads and the approximate formulas encluding the structure parameters of oil drill pipe screw coupling, deep ratio and the shape parameters of surface crack are developed.

对工程实际中的多种石油钻杆接头螺纹连接件，就公螺纹齿根、母螺纹齿根、公螺纹台阶转角处存在的不同形状、不同厚度比的半椭圆表面裂纹，在拉伸、内压、弯曲、扭转多种载荷作用下的应力强度因子作了系统研究，在大量有限元计算基础上，建立了包含接头结构参数、裂纹形状、厚度比在内的近似计算公式。

The rub-impact between rotor and stator often occurs because the rotor shaft stiffness decreases following the occurrence of the crack in the rotor shaft, and thus the coupling fault with rub-impact and crack is hackneyed fault type. Based on the nonlinear dynamical model of the cracked rotor-bearing system with rub-impact, the stability of the periodic motion and instability way were studied in unbalance-rotating speed plane and rotor/stator clearance- rotating speed plane and crack depth- rotating speed plane, and the main results were validated by the experiment.

转子轴承系统裂纹故障的出现会引起转子系统转静件之间碰摩故障的发生，因此裂纹碰摩耦合故障也是转子系统常见的故障类型，本文在裂纹碰摩耦合故障转子轴承系统的非线性动力学模型基础上，分析了系统在不平衡量-转速、碰摩间隙-转速、裂纹深度-转速等参数域内，周期运动的稳定性及其失稳规律，并用实验验证了主要理论结果。

By creating the gap the hoof at the area of the quarter crack no longer takes a pounding which keeps the crack open in essence the area Floats giving the crack a chance to mend.

通过创建差距，胡夫在该地区的季度裂纹不再是以冲击，其中存有裂纹公开联络，在本质上面积联络 floats 给予打击一个机会改过自新。

Graph 1 fore-and-aft hot crack pursues if the hot crack form of model of 2 local hot crack pursues show 3 times.

图1纵向热裂纹图2局部热裂纹典型的热裂纹形式如图3所示。

The influence of thedifferent parameters, such as blank-holder condition, thickness of blank sheetand material pattern on the wrinkle and the crack is analyzed. FLD is used tojudge the crack on the multi-point forming process successfully. The predictionof crack accords with the experiment ones, which shows choosing the properparameters can eliminate or restrain the defects, and also benefits the MPFtechnique and the shaping analysis.

本文对使用弹性介质和无弹性介质的多点成形过程进行了对比，指出使用弹性介质时在满足成形精度的前提下可以明显改善工件的成形质量，并通过对不同厚度和弹性模量的弹性介质对压痕的抑制作用进行了对比分析，探讨了最佳的弹性介质参数。

First of all, the disappearance of the first ways that children play, in order to prevent the plug-ins, Sacred Mountains, basaltic island baby can not play, and change the book thief盗宝so long ago that effort deep the rabbit is also a book of the times not to the复返; followed by the old group is the temptation of the book, but a book of 500 gold box, but the probability is very low is not a person can not bear such a money-burning ways to write or keep it Niuniu Let the people; day 9:00 into the civil service exam that there is risk of re-testing of the baby to be low-level book, but then the 10 day to individuals, we will look at the system notice can be a dream; every day to open the box when the St. lightning thunder mountain beasts also do not live to battle each other to cover up, not necessarily to say the book, the event is a child, the gold is on the Kuba Montreal.

首先先说消失了的方法打宝宝，为了防止外挂，圣兽山，玄武岛打宝宝不出了，改盗宝贼出书了，这样，以前那种只要功夫深，兔子也出书的时代一去不复返了；其次老群书是很诱惑的，但500元宝一个书匣，而且很很很低的几率也不是随便一个人可以承受的，这么烧钱的方法还是留着那写牛牛的人吧；每天进去9点科举复试的人会有几率得到低级的宝宝书，不过每天就那么10来个人，我们就看着系统公告做梦就可以了；每天到开箱子的时候圣兽山上电闪雷鸣也掩盖不要住刀光剑影，再说了也不一定出书，万一是童子，是满地的金子就哭吧。

Look at the Ice Forum entry crack, crack is a book entry overseas.

看雪论坛的破解入门书，是一部破解入门的书，值得一看。

High inventory, which has become a serious problem impeding the healthy development of nongovernmental book industry. This thesis aims to analyze the causes of book inventory for nongovernmental book industry and proposes advices for reducing the book inventory of nongovernmental book industry.

针对掣肘我国民营书业健康发展的图书高库存问题，从市场的供求矛盾、图书的商品特性、行业的发行方式、民营书业自身的行业特殊性、发行渠道的上下游信息壁垒、采购的盲目多样性、库存管理和控制的落后、物流效率的低下等方面分析其原因，从而为下一步探寻有效的解决方案，促使民营书业乃至整个图书业的健康发展提供帮助

The continuous process of after the course, hardcover book circle back use live cavity back, that is, the book sealed shell and the nucleus Raphe Magnus only book block of jiaji Division of the phase ring bond, and then lining, book and book-sealed shell system secure.

经过工艺的不断改革和提高，现今圆背精装书基本上采用活腔背，即书封壳的中缝仅与书芯的脊部相黏结，再利用环衬作用，将书芯与书封壳套合牢固。

"Bird Man's Diary, Butting on the Love Island", Changsha, China

2008年"鸟人日记，顶在爱情岛"，中国长沙

As long as they were in the service of a family of wizards, their magic would remain dormant.

只要他们一天为家庭服务，他们的法力就潜藏不动。