... Spring-Steel Roof Member 弹性钢顶梁 Spring-Steel Shutter 弹簧钢活门 Square Spring Steel 方弹簧钢 ...
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hollow thin wall steel shutter 空腹薄壁钢百叶窗 ; 空肚薄壁钢百页窗
spring steel Shutter 弹簧钢活门
spring-steel shutter 弹簧钢活门
Fixed Steel Window Shutter 固定钢百叶窗
focal plane steel shutter 焦平面钢片快门
steel fire resistant shutter 钢质防火卷帘
steel cantilever shutter 悬臂式钢闸板
fixed d steel window shutter 固定钢百叶窗
roller shutter of steel 钢制滑轮百叶窗
The door and window are designed as steel fire protective door, aluminum alloy window and shutter.
门窗设计：主要有钢质防火门、铝合金窗及百叶窗。
The door and window are designed as steel fire protective door, aluminum alloy window and shutter.
主要有钢质防火门、铝合金窗及百叶窗。
China is closing coal mines across the country and plans to shutter steel mills.
中国各地都在关闭煤矿，还计划关停钢厂。
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