99啪99精品视频在线观看,久久久久免费一区二区三区,久久中文字幕爱爱视频,欧美日韩国产免费一区二区三区


ZH

KR

JP

ES

RU

DE

Friction and wear performance testing machine

Friction and wear performance testing machine, Total:2 items.

In the international standard classification, Friction and wear performance testing machine involves: .


National Metrological Technical Specifications of the People's Republic of China, Friction and wear performance testing machine

  • JJF(建材) 147-2018 Calibration specification for small scale inertial friction and wear performance testing machine
  • JJF(建材)147-2018 Calibration Standard for Small Sample Shrinkage Inertia Friction and Wear Performance Testing Machines




Copyright ?2007-2023 ANTPEDIA, All Rights Reserved