Cat fuel injectors C7 and C9

Get a powerful advantage with high quality Cat parts from China-Lutong! We offer a wide range of Cat fuel injectors for all types of automobiles, trucks, excavator, farm equipment, and other diesel applications. We want to help you maximize power and performance and we o.......

Research on meshing impact of modified involute spur gear


The meshing impact of the involute spur gear is an important factor affecting its performance. The calculation method of meshing impulse and meshing impact response of non-retrofit involute spur gears has been given. An effective measure to reduce the gear meshing impact is the profile mod.......

YFF series asynchronous wind turbine development

The trial production process, put forward the future work direction of f.

1 Overview Due to the global energy crisis and environmental degradation, people have been seeking the use of clean renewable energy. As a clean renewable energy source, wind energy is becoming more and more.......

The harm of noise

The harm of noise to sleep: When the sudden noise is 45 decibels, it can awaken 10% of the people. When it reaches 60 decibels, it can awaken 90% of the people. Noise Hazards to Hearing: Noise can cause tinnitus, deafness, and hearing impairment. When it exceeds 55 dB, it is noisy. Long-term ex.......