Correct

夹层

/ jiācéng / 
Strokes

Definition

interval between two layers/double-layered/mezzanine

Example

As a Noun

mezzanine; sandwich

1
Jiācéng
夹层
qiáng
墙

double-layered wall

2
Jiācéng
夹层
bōli
玻璃
  
/
jiégòu
结构

sandwich glass/structure