(叶的)中脉;
Some martensite like bainites such as crossed type and midrib type in the alloy were investigated.
观察到交叉型、中脊型类马氏体形貌贝氏体,发现贝氏体中脊中有大量层错.
Extending beyond the apex of a leaf , as a midrib or vein.
在接近中脉处有一个或多个切刻.
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