In nature, water always flows from high to low, and the heat is always transferred from high temperature to low temperature. But people can use water pumps to raise the water from low to high, so that water flows from low to high. So, is there a kind of "pump" that can transfer heat f…
Qianlong throne
With the transfer of traditional manufacturing to China, European and American industrial developed countries are developing and implementing new manufacturing strategies to maintain and strengthen their competitiveness. The EU believes that manufacturing is still an important force driving …
Although this noise is essentially due to manufacturing errors, but in fact still with the choice of lubricant, bearing installation conditions, shaft and bearing the accuracy of the state. This noise is divided into two types of cage sound and vibration, are as follows: (1) cage sound and cont…
Process Overview
Crude benzene is a complex mixture of many organic compounds. Its main components are benzene and its homologues such as toluene, xylene, and trimethylbenzene. The crude benzene purification process is a process in which unsat…
[Chinalco.cn] According to the provisions of the “Depth Regulations for the Drafting of Construction Engineering Design Documentsâ€, the architectural engineering design description includes the general design instructions and professional design instructions. According to the ex…
Abstract Cutting processing pursues high precision, high efficiency, low cost and environmental protection. In recent years, cutting technology has developed rapidly in the fields of high-speed cutting, hard cutting, micro-mist lubri…