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- The fracture process zone of concrete (FPZ)is studied in this paper by means of fictitious crack model. 利用虚裂纹模型研究了混凝土断裂过程区，推导了关于过程区尺寸和裂纹顶端张开位移的二个控制方程。
- It assumes that the temperature and mass of the hermetical gas keep unchanging in the process of the crack model being penetrated,and infers the pen... 在裂纹模型渗透过程中,气体的质量和温度均不变,利用热力学定律导出了裂纹模型渗透液渗进量。
- The numerical results of smeared crack model, including load-carrying capacity, crack propagating depth and equivalent crack opening displacement, . 数值算例表明弥散裂缝模型与分离裂缝模型计算精度接近但其效率更高。
- The fracture properties of RPC and fibre reinforced RPC are analyzed with Fictitious Crack Model (FCM) in combination with linear-elastic fracture mechanics. 摘要采用虚拟裂缝模型结合线弹性断裂力学，分析了掺与不掺纤维活性粉末混凝土(RPC)的断裂特性。
- The fracture properties of RPC and fibre reinforced RPC are analyzed with Fictitious Crack Model(FCM) in combination with linear-elastic fracture mechanics. 采用虚拟裂缝模型结合线弹性断裂力学,分析了掺与不掺纤维活性粉末混凝土(RPC)的断裂特性。
- It is concluded that the Coulomb-type crack model is suitable for simulation of the interfacial fracture under mixed-mode fracture loads, however further work is still needed for improvement of its dilatancy properties. 通过对数值结果的分析比较得出结论：库仑型裂纹模型比较适合模拟复杂载荷下的界面断裂行为，但是其扩容特性仍有待改善。
- By the model of infinite flat with impenetration crack model, we calculate the frequency range of the electromagnetic radiation during several rock fracture which is from middle to high frequency. 通过建立具有中心贯穿裂纹的无限大平板模型，根据破裂宽度计算了在该模型条件下几种岩石破裂过程中产生电磁辐射频率范围。
- Finally, by using the two collinear crack model and a single crack model, a new fracture criterion for brittle materials under compression was developed based on the traditional fracture criterion. 当只有两个裂纹或一个裂纹存在时，给出了准确的应力强度因子解析解。最后依据共线双裂纹模型和单裂纹模型及传统的裂纹断裂准则，建立了脆性材料在压缩载荷作用下的断裂破毁准则。
- By means of selecting penny shaped crack model to simulate the defects in concrete,the damage model for concrete under multiaxial stress state was developed based on statistical fracture theory. 以圆盘裂纹模型模拟混凝土内部的缺陷,基于统计断裂理论推导出了多轴应力下混凝土的损伤统计模型,并根据应变等价假说,建立了包含损伤的混凝土的基本本构关系。
- A little crack detracts from the value of the vase. 小小的裂痕减损那个花瓶的价值。
- The marchers jumped off at the crack of dawn. 行军队伍在破晓时出发了。
- Mr Robert has been examining his house for cracks. 罗伯特先生在检查他的房子，看看是否有裂缝。
- Standing by him was a model worker. 站在他旁的是一位劳动模范。
- The riot police started to crack down on them. 防暴警察开始对他们采取镇压行动。
- You'll crack up if you go on working so hard. 你继续这样拚命干下去，身体会吃不消的。
- I think I can get that special model for you. 我想我可以为你找到那种特别的型号。
- She has been held up as a model worker. 她被推举为模范工作者。
- The cracks in the wall show up in the sunlight. 在太阳光照射下，墙上的裂纹就显露出来。
- He showed us a model of the new office building. 他给我们看了新办公楼的模型。
- The window was veined with cracks. 那窗户布满了道道裂纹。
