bed material

短语词组

短语

• river bed protection material 护底结构型式
• seed bed base material 苗床基质
• fluidized bed combustion material 流态化材料
• filter bed doubledeck material 双层滤料滤池
• bed d material load 底部物质负荷
• bed -material load 底负载
• bed of material 料层
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