(A) manganese oxide ore
The primary manganese oxide ore is mainly composed of weathered deposits, as well as the primary and secondary manganese oxide ore of some sedimentary and hydrothermal deposits…
The air compressor unit bearing bush is an elliptical bearing, and the possibility of oil film whirl is greater than that of the tilting pad bearing. From the spectrum analysis of the fluctuation, there are also various frequency components (including low frequency components). Th…
Today, we will share with you a new thing in the logistics and transportation industry - the super single-tire tractor . As we all know, the current domestic tractors and drive wheels have been equipped with double tires. In fact, the GB1589-2004 edition refers to si…
Six months after the two parties signed a joint-venture contract in December 2009, the future of SAIC and GM in the Indian market finally came to light. This new company, named "GM Shanghai Automotive Hong Kong Investment Company", plans to launch in the second half of 2011. Or,…