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】

YT020 Geotextile Water Permeability Tester (open constant head method) is used to test the vertical permeability coefficient and water permeability performance of geotextiles and composite materials under unloaded conditions, constant heads and laminar flow conditions.

【Related standards】

GB/T15789-2016 Method C, ASTM D4716

【technical parameter】

1. Maximum head pressure difference: 250mmH2O

2. Inner diameter of holder: Ø50mm

3. Applicable sample thickness: 20mm

4. Time controller: 999s arbitrarily set, time control accuracy 0.1s

5. Measuring cylinder: 1000ml (measurement accuracy 10ml)

6. Water level indicator: graduation value, 1mm

7. Thermometer range: 0-100oC (precision 0.1oC) electronic humidity sensor

7. Power supply: AC 220V±10% 50Hz

8. Dimensions: 400×500×850 (mm)