97人妻在线视频网-97人妻在线中文字幕免费-97人妻中-97人妻中文字幕免费视频-97人妻中文字幕无码系列-97人人草

Video Explanation

1. Back extrusion: the extrusion method in which a part of the sample flows out along the gap between the probe and the cup wall, and the flow direction is opposite to the movement direction of the probe.

2. Applications: liquid and semi solid samples, such as cream, ice cream, jam, honey, facial mask, cleansing cream, shampoo, etc.