multi-layered structures

• 多层结构

multi-layered structures的用法和样例：

例句

1. Pdf- Three structures and the module technology realize the staff data management system pdf.
   三层结构及组件技术实现员工数据管理系统。
2. Because the products 838p and the inside layer structure closely, so many imitators are unparalleled.
   本产品由于做工精细，内外层结构紧密，这让许多模仿者都望尘莫及。