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,

Low-temperature and special gas used in high-purity gas purification process of stainless steel pneumatic valve 10 initial construction wins, Fu Qigui, Wang Ruisheng, Qiu Changchun, Chinese Academy of Sciences Dalian Institute of Chemical Technology Development Company Gas Engineering Development C

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In recent years, the aesthetic tastes and tastes of the apprentices have generally improved. The demand for home has long surpassed the superficial glitz, but pursues a natural and healthy lifestyle. Because of its soft wood color and environmental health, the wooden door is favored by the mai

Abstract The stock of Fu Nike Superhard Materials Co., Ltd. was listed on the National Small and Medium Enterprise Share Transfer System on November 28, 2014 and was publicly transferred (stock referred to as “Funike”, stock code 831378), using market transfer, charging... The st

Speaking of Coca-Cola, I believe everyone has drunk. Most of its packaging is PET bottles. The Coca-Cola Company, which consumes 1.9 billion bottles a day, offers beverages to the world in a variety of ways: of course, glass bottles and aluminum cans. But Coca-Cola is the most advocated for PET. Ac

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

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

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

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

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-

Blister packaging is a general term for the production of plastic products by blistering process and packaging of the products with corresponding equipment. Advantages of blister packaging: First, blister packaging can enhance the price and image of the product itself, as well as the role of shap