gel sandwich

• 凝胶夹层

gel sandwich的用法和样例：

例句

1. It is compounded from two or more layers of glass chips and attach with single or multi layer water-solubility inorganic sandwich fireproof glue.
   由两层或多层玻璃原片附之一层或多层水溶性无机防火胶夹层复合而成。