Extra heavy duty aluminum stair treads available upon request.
特重型铝楼梯板要求提供。
However carpet comes in two basic grades - heavy and extra heavy duty.
这是因为地毯有两种基本的等级-厚型或者加厚地毯。
Heavy-duty wire bails offer extra durability for heavy use.
重型丝保释提供额外的耐用性，为大量使用。
Heavy-duty wire bails offer extra durability for heavy use.
重型丝保释提供额外的耐用性，为大量使用。
应用推荐