欧美第九页 I 欧洲久久久 I 免费不卡在线观看av I 国产美女诱惑在线观看 I 成人在线观看免费网址 I 亚洲h动漫在线 I 精品欧美一区二区三区精品久久 I 色偷偷噜噜噜亚洲男人的天堂 I 午夜性剧场 I 久久久亚洲精品一区二区三区浴池 I 国产三级欧美 I 在线1区 I 羞辱狗奴的句子有哪些 I 亚洲国产cao I 久久婷婷麻豆 I 99精品视频免费看 I 日韩三级网 I а√天堂中文在线资源8 I 最新中文字幕视频 I 国产精品视频一区二区三区在3 I 中文字幕在线视频精品 I 69精品一区二区 I 中文字幕无码免费久久9一区9 I 一级片免费网站 I 欧美视频在线观看免费 I 欧美三级网 I 91久久精品一区二区三 I 高清无码视频直接看

The consequences of friction and wear are always serious if left unattended and they may have adverse impacts on national security and quality of life. So, it can come as no surprise that tribomaterials, materials designed for use in moving contacts (sliding, rolling, etc), and surface engineering methods have for decades attracted the interest of numerous researchers.
?Automatic repair worn parts of engine and transmission, restore the proto size of engine parts.
?Prolong the service life of the engine more than 2 times
?Extend the engine overhaul period
?Fuel consumption saved 5-15%
?Extending the replacement cycle of lubricating oil 2-3 period
?Reduce exhaust emissions 20-50%
?Increase engine power 5-25%, Improve the acceleration performance
?remove carbon deposition and colloidal fouling from engine
   Improve the dynamic compression, restore cylinder vacuum