The rational planning and use of rural land is an important step in the development of China's agricultural economy. Therefore, the land resources must first be sorted out from the measurement of land area. The GPS area measuring instrument is based on GPS technology to reali…
The improvement and development of sealing technology is a field with great potential; with the improvement of the thermal cycle parameters of the engine, the sealing working conditions have also greatly increased, and the current sealing technology can no longer meet the requirements.…
During the two sessions of the National People's Congress in 2013, Zhang Ping, director of the National Development…
Instruments and meters in less than a decade, compared with 2000, both manufacturers and middlemen have doubled