sandwichingn.夹层铺料sandwichn.三明治vt.插入；夹在中间sandwich immunoassay双抗原夹心法sandwich mesh repair三明治法网片修补术sandwich cake method夹心饼法sandwich irradiation夹层辐照sandwich penetrating穿透夹层sandwich arrangement层叠布置,交错重叠布置sandwich immunosensor夹心免疫传感器sandwich panel theory夹层板理论sandwich-type shell夹层壳sandwich type element多层元件