The blasting work surface is accepted as a safety technical measure (1) Overview of the work surface 1. Geological conditions of the working face Things to work long, coal thickness, tilt angle, top and bottom slate and the like. 2, the work surface support situation Support form and parameters ....
“To me, this is the right choice.†In September 2017, we selected the liberation tractor vehicle of FAW Qingdao and the Weichai WP10H series engine. Zhang Lei, a user of Shandong Weifang, again proved his enthusiasm for the Weichai brand. Zhang Lei, a native of Weifang, was the c ....
Abstract: Distribution transformers will be scrapped due to high loss during long-term use, which is also a serious waste of resources. If we can reuse the used transformers, it will not only effectively reduce the waste of resources, but also It can also improve the utilization of distribution tr ....
In the past, people often said that the car was an "iron shovel" because most parts of the car were made of steel. But perhaps you also discovered that many parts of the car are not made of steel, such as bumpers, front and rear fenders, fuel tanks, air intake grilles, etc. are usually ....
Many old drivers think so. But is this true? First of all we have to understand, what is ethanol gasoline? Ethanol Gasoline is a new type of alternative energy source formed from the blending of fuel ethanol and ordinary gasoline processed from grain and plant fibers in a certain proportion (90 ....
Each member unit and related units: China is poor in potassium, but the 1.4 billion Chinese people's pursuit of a happy life cannot be "deficient in potassium"! China's rapid development of potassium resources development over the past 20 years, the industry has emerged a lot of ....
Dongfeng Nissan entered the shared travel field, and invested in the first batch of 30 Chenfeng pure electric cars. It has 8 stops in Guangzhou Huadu and is operated by its Dongfeng South Lianyou Technology. Simply brush the code to access the shared business process, which is convenient and fast. ....