?壁式配电板壁式交换机

... 板壁压力中心 panel center of pressure 屋面和板壁材料 roofing and siding material 壁式配电板壁式交换机 wall type switchboard ...

?墙挂式交换机

... wall type and retractable soot blower ==> 墙式,伸缩式吹灰器 wall type switchboard ==> 墙挂式交换机 wall unevenness ==> 壁厚不均 ...