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- Meso-scale Hot-spot Model of Crack Friction in Solid Propellant 固体推进剂裂纹摩擦热点形成细观模型分析
- 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。
- Friction causes a rolling ball to stop finally. 摩擦力使滚动的球最终停了下来。
- The riot police started to crack down on them. 防暴警察开始对他们采取镇压行动。
- Constant friction wore out the heels of my shoes. 不断的摩擦磨损了我的鞋跟。
- Friction between two sticks can create a fire. 两个棍棒相互摩擦能起火。
- 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。
- 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。
- The window was veined with cracks. 那窗户布满了道道裂纹。
- Let's paste up the cracks with some thick paper. 我们用厚纸把裂缝糊起来吧。
- There are many cracks in the old wall. 墙上有许多裂缝。
- In the absence of friction belted machinery would not be used. 没有摩擦力，皮带传动的机器就无法使用。
- Have another crack at solving this puzzle. 再试一试把这个难题解决了吧。
- Let's paste up the cracks with paper. 让我们用纸把裂缝糊起来。
- Cracks gaped in the ground after the earthquake. 地震後地上开裂了。
- She made a crack about his fatness. 她取笑他肥胖。
- There is a crack in this window. 这扇窗户上有个裂纹。
- She got up at the crack of dawn. 天刚亮她便起床了。
