Ten soil diseases common in farmland

Due to the long-term mechanical tillage and manual operation, the tillage layer is shallowed. The soil layer of most farmland is shallowed, and the effective soil layer is about 15 cm. In addition, rainfall and irrigation are carried out, and the “plow bottom layer” is moved up. Thick,

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How to choose indoor partition material

Some said that the use of porous red brick indoor partition, and then painted, approved white, porous red brick is a clay brick, is an improved version of the traditional red brick, but still have to use clay. Now many people buy their own homes and they have to carry out their own partitions. The

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Note of the bag filter during operation

The operation of the bag filter can be divided into a trial operation period and a daily operation period. Pay attention to the impact of changes in the load on the host equipment on the performance of the precipitator. After the machine is started, pay close attention to the working condition of th

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Broaching

Internal broaching can be used to machine through holes of various shapes, such as round holes, square holes, polygonal holes, spline holes and internal gears. It is also possible to machine grooves of various shapes, such as keyways, T-slots, dovetail slots, and gutters on turbine disks. External

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Electron beam welding

The collected information shows the stainless steel "target=_blank> stainless steel in digital form, which is specially made for aviation gas turbines and must be operated strictly at specific temperatures. This type of super heat resistant stainless steel "target=_blank> stainless

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Cryogenic treatment

Metal cryogenic treatment originated in Switzerland for more than 100 years. At that time, it was found that tools that were chilled by ice and snow could be used for a longer period of time. Swiss army knives, clocks and Gillette blades were the beneficiaries of this process. Introduction Ultra-

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