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传统的煤沉积模式难以解释其超厚煤层的成因。
Traditional coal depositional model can hardly explain the cause of this extra-thick coal seam.
该工艺用于超厚氧化皮铜及铜合金零件表面处理，效果较好。
The process can be applied for the surface treatment of copper and copper alloy parts with super-thick oxide films and has a good effect.
双室式出线盒，特设超厚出线盒板护板，引出电缆防扭设置。
Two chamber type outlet box with particular extra-thick outlet box fender and anti-twist setting for outlet cables.
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