Zip insertion by the semi concealed method is very similar to the double lapped seam.

用（半隐蔽）的装拉链方法与双搭缝非常相似。

youdao

Zip insertion by the semi concealed method is very similar to the double lapped seam.

用（半隐蔽）的装拉链方法与双搭缝非常相似。

youdao