Note: Area is based on a gage pin measurement of inside diameter of the hose.

注意：指的是软管直径内部有指针测量器的那部分区域。

youdao

Note: Area is based on a gage pin measurement of inside diameter of the hose.

注意：指的是软管直径内部有指针测量器的那部分区域。

youdao