介绍建筑工程外装铝复合板幕墙的放线测量，龙骨安装、板材加工及安装、注胶情况。
The wire measure, keel installation, board processing and slipping glue of construction engineering outboard aluminium compound plate curtain are introduced.
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.
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