... 舰船防化 Chemical Defence on Ships 稀有舰船 Limited Issue Ships 舰船名牌 arch board ...
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Arch board painting 拱板油画
prestressed arch board 预应力拱板
the two-arch board 双折板拱
Thin steel arch trough board 薄钢拱形槽板
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A wind outlet is punched on the arch circular peripheral surface of the exhaust shelf. At least one cloth hanger is also provided on the surrounding plane of the connection board.
出风栅的拱圆型外周圆面上冲压有出风孔，连接板 周边平面上还设有至少一个挂衣架件；
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