The microstructure of the weld zone is tempered martensite zone.热影响区的显微组织主要为回火马氏体;熔合线结合良好,组织均匀.These lath martensite first nucleates in parent austenite intergranular and twin boundary.应变诱发马氏体首先在原奥氏体晶界和孪晶界形核.There occour...
After several hours of aimless searching they were getting low on fuel.在几个小时漫无目的的搜寻之后，他们快没燃料了。Peters had been adrift and aimless.彼得斯曾经漫无目的地四处漂泊。He led an aimless sort of life.他过着一种漫无目的的生活....