Due to the complexity of the inner structure of the cleaning valve , it may be create vortices , cavitate , water hammer , back water and so on 由于清洗液阀门流道的内部结构复杂,当流体通过阀道时产生诸如旋涡、空化、水锤和死水区等水流现象。
2.
After the solicitation of craze , because of the growing of the craze , it occurs a rupture and come into being a micro - crack , it will form a bigger crack or cavitate , it will lead an unitary and macroscopical rupture in the end 银纹引发以后，它不断生长继而发生断裂，形成微裂纹。微裂纹的串接将产生较大的裂纹或空洞化，并最终导致材料的整体宏观断裂。
