There is a double-layer, hose , and transparent tube , pipe, pipe.
软管有单层、双层，并分透明管、圆管、扁管。
The cover layer on one side of basin has double structure.
盆地一侧的盖层具有双重结构。
Levee double - layer foundation is very common in levees along large rivers.
双层堤基在大江大河防洪干堤中非常普遍。
Double layer sound proof, Low noise.
双层隔音，噪音低。
Immediately there is a sharp increase in current to charge the double layer.
电流立即急剧增加而使双电层充电。
Cast hopper. The double layer design, noise reduction;
投料斗双层设计，减少噪音；
You can do this by double clicking on the layer.
你可以双击层打开窗口。
You can do this by double clicking on the layer.
你可以双击层打开窗口。
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