By observing microstructures, we find they may form spheroidal a, acicular a and feathery a.

组织观察发现，除形成球状a、针状A外，还形成羽毛状a。

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By observing microstructures, we find they may form spheroidal a, acicular a and feathery a.

组织观察发现，除形成球状a、针状A外，还形成羽毛状a。

youdao