Recently, in China National Aircraft Heavy Industry (Luoyang) Co., Ltd., the staff was debugging the company's newly developed domestic smart remote-controlled sanitation compactor.
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From January to September, the country has sold 101,935 sets of excavation machinery and equipment all over the country, an increase of 100.1% year-on-year.
With the new round of infrastructure i.......
1 The ore body has a long trend and uses a centrally developed mine;
2 The
First, the nature of compressed air and pre-treatment compressed air comes from the atmosphere, while the atmosphere contains a certain amount of water vapor, which is a kind of humid air. Engineering thermodynamics believes that the water vapor pressure in wet air is usually very low, wh.......
[Chemical composition] Generally, its composition varies roughly from FeAs 0.9 S 1.1 to FeAs 1.1 S 0.9 . The conditions of formation can be estimated by using the As/S ratio: the arsenopyrite formed by high temperature is rich in As; the l.......