Each berth should be fitted with a comfortable mattress with cushioning bottom or a combined cushioning mattress, including a spring bottom or a spring mattress.
每张床铺应配备带有缓冲底板的舒服床垫或包括弹簧底板或弹簧床绷在内的复合缓冲床垫。
The 200,000 tons berth in Fangchenggang port mainly adopts gravity pier structure. Its substructure is a large temporary cyl inder with bottom plate.
广西防城港20万吨级码头为重力墩式结构，其下构为临时有底大圆筒。
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