The average microhardness value from cladding coating transition layer white bright band gradiently distributes.从熔覆区→过渡层→白亮带的平均显微硬度值呈梯度分布.The enamel surface microhardness was measured by a Leitzs microhardness tester.采用维...
幼虫变为蛹,然後再变成蝴蝶.A larva metamorphose into a chrysalis and then into a butterfly.蝴蝶由蛹孵化而出.The butterfly emerged from the pupa.蛹蛰伏在土壤中，直到冬天它们才蜕变成蛾子飞出来。The pupae remain dormant in the soil until they emerge as adult moths in ...
这封信8月6日在伦敦盖过免费邮戳。The letter was franked in London on August 6.所有的信件上都盖有阿伯丁郡的邮戳。All the letters bore an Aberdeen postmark.信封上盖有赫尔辛基的邮戳。The envelope was postmarked Helsinki....