美女脱了内裤打开腿让男人戳,亚洲国产区男人本色在线观看,中文字幕久精品免费视频,久久99热精品免费观看牛牛

×

MB-8582 GB wear-resistant test machine for shoes

Video
Gallery
360°Show
×
×
×
Applicable scope
Test principles and standards
Instrument characteristics
Configuration list
This machine is used to test the wear resistance of shoe sole and forming bottom (piece). The rotary grinding wheel is vertically pressed on the specimen and wear test is carried out at a certain load, speed and time to measure the wear mark length.
GB/T 3903.1