Around 1880, the company knew about the method of recovering gold from solution with activated carbon. However, the problem of desorbing gold from charcoal cannot be solved. In order to recover gold, activated carbon must be calc…
The special constant-temperature culture device for the series of biochemical incubators and mold incubators, molds, and cultivation of micro-organisms and breeding tests is applied to ideal equipment for scientific research, production and u…
From January to April 2012, six high-energy-consuming industries invested 1 trillion yuan, a year-on-year increase of 23.7%, and the growth rate was 10 percentage points higher tha…
The Bosch Group has announced plans to increase its annual investment in China to RMB 3.9 billion to RMB 4 billion in 2015.
In 2011, the consolidated sales of the Bosch Group in China reached 42.3 billion yuan, a year-on-year increase of 13%.…
The reporter learned from the news conference held by the Press Office of the Ministry of Agriculture on April 1 that this year China will use “corporate participation†as an important…
Sealed garbage trucks generally use Dongfeng's chassis. The dustbin is made of reinforced b…
As Audi's largest share of sales in China, but also ruled the C-class car market for nearly 30 years, the A6L once again demonstrated the king's domineering in July. The BMW 5 Series has just ushered in a new generatio…
    1 open pit mining open-pitlimit
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The "Coal and Electricity Clean Development Report" shows that coal-fired power is still the main power source and basic power source of China's power supply. However, the technology has reached the world advanced level and great achievements have been made in clean…
I. Mine construction monitoring
(1) Monitoring of relative displacement of surrounding rock surface
1. Convergence measurement: It measures the relative deformation and deformation law between two points on the surface of the roadway.
2. Conductor measurement and ele…