国产无遮挡又黄又爽在线视频,国产亚洲成AV人片在线观看,伊伊人成亚洲综合人网7777,中文有码vs无码人妻

×

MB-5850 JAMES skating tester

Video
Gallery
360°Show
×
×
×
Applicable scope
Test principles and standards
Instrument characteristics
Configuration list
This machine is used to test the dry static friction coefficient of shoe sole and heel material. The horizontal and vertical forces on the test ground are generated through the load through the sample, and the friction coefficient between the sample and the ground is defined based on the force balance principle.