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.

youdao

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.

youdao

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.

youdao