孢子外覆有盾形罩套的鳞毛蕨科或水龙骨科的蕨类植物。
Any of various ferns of the genera dryopteris or polystichum or lastreopsis having somewhat shield-shaped coverings on the sori.
此外，结合试验路的修筑，总结出一套薄层罩面硬质沥青混凝土面层的施工工艺。
In addition, combined with a large number of test road construction, the construction technology of hard asphalt of thin overlay were Summed up.
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