久久久久久久97,中文日韩亚洲欧美制服,人与人性恔配视频,国产成人小视频

News

Zhejiang High quality Gear manufacturer

News

  • The failure form of gear

    1, tooth surface wear

    For open gear transmission or closed gear drive containing unclean lubricating oil, some hard abrasive grains enter the friction surface du...

  • Classification of vortex rod

    Folding Archimedes worm

    The worm of Archimedes worm (ZA worm) is perpendicular to the plane of the worm axis (end face). The tooth profile is Archimedes spiral l...

  • The working principle of the turbine

    Take the gasoline engine's working principle, for every cylinder to provide 1 kilograms of gasoline, it needs about 15 kilograms of air inhaled by the cylinder, so...

  • How should the micro tillage machine be maintained

    The dynamic micro tillage machine is in the power of less than 7.5KW, is a machine with a small diesel or gasoline engine as power, and direct drive axle with axle dri...

  • 4 Record 1/1 Page
    Copyright?2022 YUHUAN SANPING MACHINERY CO..LTD.  webmap Technical support:tzzhexing.com
    两当县| 台北市| 太康县| 云龙县| 高陵县| 盐边县| 仙桃市| 台东市| 冷水江市| 嘉定区| 剑阁县| 广宗县| 二连浩特市| 柳江县|