After 3-5 years of navigation, the ship will return to the dock for regular maintenance to ensure the normal and safe operation of all parts and equipment of the boat. Amo...

Friction is commonplace. Records display that friction consumes one-1/3 of the arena's primary strength, and eighty percentage of gadget elements fail due to put on and te...

The shaft elements of CNC device equipment, along with gadget device spindles, are usually assembled into thrust ball bearings and rotate at high speeds, which occasionall...