Liao shut down nearly 700 homes

The Liaoning Province Environmental Protection Bureau recently announced that in 2007, Liaoning Province shut down 699 air pollution companies and could reduce sulfur dioxide emissions by 49,000 tons.
As an old industrial base, Liaoning Province has a heavy chemical industry with a heavy p

The "defects" of the Kjeldahl analyzer

Kjeldahl is the most commonly used instrument for the determination of protein content, and it is involved in many industries, especially in food, feed, food testing and other fields, because of its relatively simple operation, and the use of internationally accepted Kjeldahl nitroge

Some common faults and remedies for high and low temperature shock chambers

1. High-low temperature impact test box In high temperature test, if the temperature change does not reach the test temperature value, the electrical system can be checked and the faults can be eliminated one by one. If the temperature rises very slowly, it is necessary to look at the air c

Flotation characteristics of natural gold in ore

Natural gold is an easy-floating mineral. The crystal structure of natural gold is a metal lattice, and the force forming a lattice is a metal bond.

Because of the weak metal bond strength, it is determined that natural

Four applications of industrial robots and CNC machine tools

The automotive industry has always been the most important field of robotics applications. With the increase in automation requirements, the application of industrial robots has been further expanded. In addition to traditional welding applications, robots are loading and unloadi