查询词典 toe crack

The metal melt around the oblique crack tip passivates the crack tip and inhibits the cracking trend of main crack source.

在瞬间超强脉冲电流作用下，裂尖前缘发生了强烈的绕流热集中现象，斜裂纹裂尖附近金属熔化，钝化了裂尖，阻止了干线裂纹源的开裂趋势。

Because manual seed points are not exactly located on the crack features, two methods are proposed to search the geometric crack features, such as crotches. Wavelet transformation, clumpping, thinning and crossing algorithm are processed sequentialy to reach the semi-automatic feature extraciton purpose. Depending on these seed points, crack tracks and edges are determined by the method in this paper. Local image registration is utilized to raise relative accuracy and acquire the expansion of concrete cracks.

由於人工种子点并非准确落在特徵点，因此在种子点座落区域取目标视窗，使用基底函数转换边界侦测、区域增长消除杂讯区块、裂缝区块骨骼细化，接著寻找裂缝交叉点及端点，准确寻找出种子点应座落的位置，以此位置匹配后时期裂缝影像种子点，续以侦测前后时期裂缝边界，利用局部套合求得高相对精度，求得裂缝成长的情况。

Changes suddenly in the net joining reason place steel bar section, has the stress concentration, creates the pan partial crack compared to bend the region the crack to widen generally about 25%, this may through cause the lap joint to be located the stress to compare the narrow view the stipulation to solve, may cause the joining reason place crack opening not to surpass the standing operating procedure.

在网片搭接端头处钢筋截面突然变化，产生应力集中，造成板面局部裂缝比一般受弯区域的裂缝加宽25％左右，这可通过使搭接接头位于受力较小处的规定来解决，可使搭接端头处的裂缝宽度不超过标准规定。

Although the theory believed, the cast-in-place concrete floor crack is a phenomenon which avoids with difficulty, but through the design, the construction and a series of strict technical management measure, reducing and avoiding the crack is completely feasible.in fact it also has quite many projects not to have the naked-eye obviously crack.

虽然理论认为，现浇混凝土楼板裂缝是难以避免的现象，但通过设计、施工等一系列严格的技术管理措施，减少和避免裂缝是完全可行的，实际上也有相当多的工程未发生肉眼可见的裂缝。

Through studying mechanism of drilling string failure in the action of interaction of cyclicstresses and corrosion, we find fracture source is accord with pitting corrosion inside surface ofdrilling string, crack from pitting corrosion lead to drilling string failure, the process of drillingstring failure is new drilling string → corrosion pit forming and crack initiation → corrosionfatigue crack propagation→piercement or fracture.

通过研究在钻柱交变应力和腐蚀的交互作用下的机理发现，腐蚀疲劳裂纹源与钻杆内壁蚀坑对应，蚀坑萌生裂纹造成钻柱失效，钻柱腐蚀疲劳破坏过程归结为：新钻杆—蚀坑形成及裂纹萌生—裂纹扩展—刺穿和断裂。

The crack occured in silica brick generally includes surface crack and layer crack.

硅砖中裂纹包括表面裂纹和层裂。

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。

The second is to cut a mere 100 calories from your diet , which is the equivalent of a tablespoon of butter.

第二个就是从你的饮食中减少一百卡路里，只是相当于一大汤匙的黄油。

This is where the Rorschach test comes in.

现在，罗氏测试就出现了。