The feature of fracture morphology and microdefect has been evaluated and characterized for the rare earth-zirconium alloy.

对稀土锆合金断口缺陷的形貌特征、断口形貌特征等表征。

Fracture motorbicycle piston was analysed by means of chemical composition analysis, hardness testing, metallographic examination, and the macro and micro-fractography analysis.

摘要采用化学成析、硬度测定、金相检验以及断口宏、析等方法，对断的摩托车活塞析。

The effects of sintering parameters on the shear and bond strength of ceramet friction material were studied and its fracture morphology was observed and analyzed.

研究烧结工艺参数对金属陶瓷摩擦材料抗剪强度和金属陶瓷摩擦片结合强度的影响,察并析断口形貌。

The umbilical cord can be tied with unwaxed dental floss, and cut on the far side of the time about two inches from the abdomen.The cut end should be painted with iodine to prevent infection.

脐带用消毒过的棉线系住，从距腹部3cm处剪断，断口需用碘酒消毒以防感染。