1·A blown-up photograph of carefully painted crackle marks that cunningly mimic the look of centuries-old paint elicits a smile.
有一幅放大了的照片很能引人会心一笑，照片里，被仔细画上的裂纹狡猾地模仿了古老画作的外表。
2·Fast cooling speed was the main reason of generating cold crackle.
认为冷却速度过快是产生冷裂纹的主要原因。
3·This paper discussed the designing method of damage tolerance, gave calculation formulas of reliability in crackle, and finally, for an example, optimal design of the pressure vessel has been set up.
论述了损伤容限设计的方法，给出了压力容器含裂纹的可靠度计算公式，并举例确定了某压力容器的最佳设计。
4·Accordingly, it is very important and significant to calculate the stress of the cylinder especially in the dangerous position, and to predict its crackle expanding speed and its surplus life.
因此，计算筒体尤其是其危险部位的应力，预测其裂纹扩展速度或其使用寿命，具有非常重要的实际意义。
5·The crackle of the structure was produced because of the reasons, such as metallurgical inclusion, processing, assembling, the alternated load and working environment, etc.
结构的裂纹多由冶金夹杂物、加工、装配、疲劳载荷和工作环境(如介质、高温等)等一种或几种的联合作用而产生。