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At present, crack propagation life analysis depends on the Paris's formula, which needs the stress intensity factor amplitude function. In the engineering, the SIF function is simplified. A new method to determinate the function is put forward.

目前的机械结构裂纹扩展寿命分析方法主要是基于Paris公式的，它需要确定应力强度因子幅值的数学表达式，工程应用采用简化方法计算求得。

Angel on a Red Horse 骑著红马的天使 February 19, 1989 1989 年 2 月 19 日 I was asleep this afternoon, when I was awakened by the whiny of a horse, and a crack of a whip!

当啪红候但为我在那个下午睡觉的时候，我被马的叫声及鞭子的声唤醒！

Brick arch failure mode:Cracks are separated into shear and flexural cracks, the shear and flexural crack of un-reinforced brick arch occur in arch angle 63o respectively and at the bottom of 3rd brick walls on both sides of opening.

砖拱破坏模式：缝大致上可分为剪缝与挠曲缝；未补强砖拱斜向剪缝发生处为拱心角约63o 处，挠曲水平缝发生於开口侧底部三皮砖位置。

At present, asphalt macadam is often used as bottom course of the overlay on old concrete pavement in order to restrain reflective cracking in the engineering. The results in this research indicated that the abilities of resisting reflective cracking of this mixture were poor. The modified full asphalt mixture is most capable of resisting reflection crack than the others.

目前在工程上为了防治反射裂缝，旧混凝土路面加铺层常采用沥青碎石作底面层，本文的研究结果表明，这种类型混合料抵抗反射裂缝的能力很差，而使用改性沥青的富沥青密实型级配混合料抵抗反射裂缝的能力最强。

This article study the most three factors of influence in pre-splitting blasting , which are powder capacity per meter 、 spacing of hole and decoupling. On the basis of ANSYS/LS-DYNA and establishing 3D model about two pre-splitting holes, numerical value sumilate expanded process of the crack , then estimates effect of the rock crash by analyzing stress , otherwise estimates effect of pre-splitting blasting by expanded picture .

本文研究了预裂爆破中影响最大的三个因素：线装密度、周边眼间距及周边眼的不耦合系数，并利用动力有限元分析软件ANSYS/LS-DYNA，建立两预裂孔爆破的三维模型，数值模拟出预裂爆破裂缝扩展过程，然后通过应力值的分析来判断岩石的破碎情况，另外利用预裂缝的扩展图分析预裂爆破的效果。

the blood vessel of brain gets sick (brain to lack blood to manifest suddenly, cavity crack brain blocks, thrombosis, cerebral hemorrhage, under cavity hemorrhage and so on) is seriously threatens the human health a kind of disease.

脑血管病(脑缺血发作、腔隙性脑梗塞、脑血栓形成、脑栓塞、脑出血、蛛网膜下腔出血等)是严重威胁人类健康的一类疾病。

There was a loud crack, and a house-elf appeared, with a snout for a nose, giant bat's ears, and enormous bloodshot eyes, crouching on the Dursleys' shag carpet and covered in grimy rags.

它长着一个猪鼻子，一双蝙蝠般的达耳朵和巨大充血的圆眼睛。

Because there is no standard of fracture mechanics experiment for rocks, before applying the new method to study anti-plane shear crack, testing experiments had been carried out by using it on universal testing machine Instron 1185 to measure the values of Kic and Kiiic for rocks (Black Gabbro, Carrara Marble, Tennessee Sandstone), which had been obtained by using other experiment methods and technology before.

因为对于岩石还没有相应的断裂力学实验规范。因此在把本装置用于岩石反平面剪切裂纹研究之前，先用它对已经用其它技术测定了断裂力学常数，K〓，的岩石(Black Gabbro，Carrara Marble，Tennessee Sandstone)在Instron 1185万能试研机上用该装置进行了相应的K〓，K〓等测定。

Based on exploding dynamics theory, the scope of smash area, crush area and crack area, which is shaped under the action of a blast wave and stress wave resulting from the explosion of cartridge bag, is studied respectively.

基于爆炸动力学理论，得出了药包爆炸裂隙区半径的计算值与药卷临界埋藏深度基本吻合的结论，从而证明了&三区&理论计算式的正确性，为特定条件下爆破工程控制参数的设计提供了理论依据。

A new direct chill casting model based on the proCAST software characterizes heat and stress conditions and solidification criteria, and assists in predicting crack formation during aluminum casting.

直冷模铸造的建模和优化，可以减少铸锭开裂这种新的直冷铸造模型是在正面铸造软件的基础上描述在压力和应力状态和凝固标准下预测铝合金铸造过程中裂纹的形成方式。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。