Lu days of coal mining caused the land, the ecological damage to the environment, to promote ecological civilization construction, mine reclamation imperative. However, there are still some problems in promoting mine greening and reclamation. This paper mainly analyzes existing problems and solution
Read TutorialThe reason is that the first-order continuous conductivity of the original design function q(H1) cannot guarantee the smooth connection of the two-section curve at the intersection. Since q(H1) is monotonically increasing, there is only one minimum value, that is, the minimum value, and the initial
Read TutorialAccording to foreign media reports, a Japanese research team recently invented a "transparent" vehicle with a system consisting of a computer, a projector, a camera, and a special mirror to project the outside of the car body inside the car body. With this image, the driver can see wha
Read TutorialThe seedlings and seedlings of crop seeds are affected by drought during the sowing process, which means that the relationship between crop emergence and soil moisture environment and the critical value of moisture for drought-resistant emergence has become the premise of stable and high-
Read TutorialSecond, the crushing plant equipment unit installation (a) 600 × 500 tank type mining machine, 250 × 400 jaw crusher unit (see the following figure) (2) B=600 chain-feeding machine, 250×400 jaw crusher unit (see below) [next] (3) DZ electric vibration feeding machine, 400×600
Read Tutorial"The car is like a person, you are good to it, it can be good to you." This is a sentence from the master of Liu Shuangshan from Taian, Shandong. A few days ago, I interviewed Master Liu at the Tianlongge Stadium in Jinan and reported that he was driving a car that had not been over
Read TutorialOptical fiber transmission, that is, data and signal transmission using optical fiber as a medium. Optical fiber can not only be used to transmit analog signals and digital signals, but also to meet the needs of video transmission. Optical fiber transmission is generally carried out using optical
Read Tutorial1. Existing vault system management model The treasury off-site watchdog system adopts multi-level centralized management methods such as provincial, regional, and municipal levels. The front-end equipment is installed at the network, and the information is reported to the local city or provincia
Read TutorialNFC unlock? I believe that many people are still very strange to hear the word for the first time, and they don't even know what it means. The full name of NFC is Near Field Communication, which is also called "near field communication". The straightforward point is that communicatio
Read TutorialTake strong measures to ensure the continued growth of production and sales next year At the 2009 China Business Meeting of China National Heavy Duty Truck Group and China National Heavy Duty Truck Hong Kong Co., Ltd., Ma Chunji, chairman of CNHTC, said that in the event that the heavy truck indu
Read TutorialAPPLICATION AND PROPERTIES:1.Low Speed Crushing Machine is desugned for various degraded materials generated from granulating injection moulding machine.2. It features stable work,no noise and dust pollution,even granule size of pro
Read TutorialMr. Li, a customer in Xinjiang, has nearly 20 years of experience in earthwork construction. He has several types of construction machinery and equipment: excavators, loaders, road rollers, dump trucks, etc. It has stable engineering and is a leading customer in the urban infrastructure of Urumqi.
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