fracture face meaning in Chinese

断口面
断裂面
裂缝面
破坏面

Klc of j3 is higher than j2 and j1 at different temperatures , and this shows the stronger ability of j3 to resist crack expanding . two probations have been tried to explore the reasons concerning the results above , one of which is by analyzing the compositions of the three pbxs above and shows that the stronger ability of j3 to resist crack expanding is probably mainly due to the use of bonder b2 , and another is by using scanning electronic microscope sem to observe the fracture face morphologies of the specimens at different temperatures . the quantitative observations strongly support the laws of klc of pbxs changes with temperature is revealed as follows : a
测试了三种高聚物粘结炸药在不同温度下的平面应变断裂韧度k _ ( ic )值，得到了这三种炸药的平面应变断裂随温度的变化规律： a 、随着温度的增加，高聚物粘结炸药的平面应变断裂韧度降低； b 、在45以后j2的平面应变断裂韧度降低最快，在60时已很差，比j1还低，可以认为j2在高温下的抗裂纹扩展的能力比j1还差； c 、在不同温度下， j3的平面应变断裂韧度比j2和j1的均高，表现出相对较强的抗裂纹扩展能力。