(1) System of interaction between support and surrounding rock The support of the mining face and the surrounding rock supported by it are a pair of interacting contradictions. The design of the structure and performance of the support must conform to the law of surrounding rock movement of the mi

The newly revised Recommended National Standard GB/T 9473-2017 "Reading and Writing Workplace Lamp Performance Requirements" will be released on April 1, 2018. The newly revised Recommended National Standard GB/T 9473-2017 "Reading and Writing Workplace Lamp Performance Requirements&q

On the 10th, Intel announced the use of advanced materials science and manufacturing technology to create a new type of superconducting chip and deliver it to QuTech, Intel's research partner in the Netherlands. This is a big step Intel made to make quantum computing a reality. Quantum comput

1   Technical name: High tailings high concentration filling goaf technology 2   Technical Scope: non-ferrous metal mines fill mined-out area 3   Technical introduction 3.1 Basic principles A high-concentration filling material for the whole tailings is prepared by using a vertical sa

Reserve calculation method (2) Geological block method This is the method most widely used at present in the coal reserves in the calculation, as shown in FIG 2-8-12, which is a layer of coal with various elements divided into a plurality of different shapes and sizes of pieces, respectively, Cal

Floating pulp temperature increase beneficiation, flotation can increase the speed and get a higher flotation (recoveries and concentrate quality). Slurry temperature also has an effect on the action of activators and inhibitors. Generally, when the temperature is raised, the action of the activat

Home is precious to everyone. It can shade you in the hot summer. It can send you warmth in the cold winter. When you stay home, you feel full of security. The power battery is in need of such a "home" who knows how to deal with it. As we all know, the temperature will affect the batter

1, twisted-pair (twisted-pair). Twisted pair is now the most common transmission medium and consists of two mutually insulated copper wires, typically 1 mm in diameter. The two wires are twisted together in order to prevent their electromagnetic induction from interfering signals in adjacent pairs

At the 2014 Zhongguancun Forum Annual Meeting, the LED large display in front of the main venue and the DLP display behind the venue formed a vivid visual contrast, which left a deep impression on the participants. Liard, the provider of the LED large display, recently signed a single order of 50 mi

On July 18th, the Quality Supervision Bureau of Qingyang organized the person in charge of 45 qualification inspection and inspection agencies of the city and the quality management personnel of the municipal and county quality supervision bureaus to participate in the deployment and train

Model NO.: SQB2.0/25-D24/210 Power: Solar Energy Start Up: Electric Pump

[China Instrument Network Instrumentation Conference] Recently, the fourth session of the third session of the Academic Committee of the State Key Laboratory of Integrated Automation of Process Industries was held. The meeting focused on achieving intelligent optimization of manufacturing, conduct