上课把女同桌内裤摸湿,一线高清视频在线观看www国产,色综合伊人色综合网站下载,男人边吃奶摸下边免费视频,精品综合久久久久久蜜月

【Scope of application】

Used to cut a certain length when measuring the linear density of various fibers such as cotton, hemp, and chemical fiber

【technical parameter】

1. Sampling length:

2. Effective cutting accuracy: ±0.1%

3. Minimum slice thickness: 20/um

4. Dimensions: 160*100*75mm

5. Weight: 1.00kg