At present, there are not many gold minerals found in nature, about 20 kinds. The most common native gold, gold and silver gold and silver mine, followed by tellurium and tellurium, gold and silver mines, etc., although many species, widely distributed, but not much; as for gold by bismuth was sele
The recent decline in international oil prices is difficult to ease, and crude oil prices have been staged at 5 consecutive yin. Domestic refined oil prices have been lowered by less than half a month, and the market has again signaled a downward adjustment in oil prices. The reporter learned yeste
China Drying Technology Co., Ltd. established a special Shanghai Biopharmaceutical Test and Incubation Base at the Zhangjiang Biopharm Incubator Park. It has become an important new member of Shanghai's biopharmaceutical industry technology innovation service platform and will build China Bio.
Common cold water pump refers to the pump can be transported below 80 ° c temperature of the liquid pump called cold water pump, the temperature between 80 ° c to 120 ° c pump called the hot water pump. The difference between cold water pump and hot water pump: 1, cold water pump featur
Guidance: Environmentally-friendly stationary waste gasification equipment is mainly composed of the main body of waste gasification furnace and the corresponding electronic control system, including the receiving and feeding system, high-temperature gasification system, flue gas purificat
The 2017 Shanghai Auto Show is in full swing. As Germany's leading supplier of automotive engine parts and filters, this year's Auto Show highlights the innovative "CareMetix" air-conditioning filters, thermoelectric battery regulators and 1.2 million km with extremely high
ZF is the world's leading supplier of drive and chassis technology and active and passive safety technology. On April 20, 2017, ZF brought its competitive products such as hybrid transmissions and electric power steering systems to the Shanghai auto show. ZF Electric Drive Technology
On December 20, the State Council issued the “Government-approved Catalogue of Investment Projects (2016)†(hereinafter referred to as the “Catalogueâ€), emphasizing that in principle, new traditional fuel vehicle manufacturers will no longer be approved, and new energy vehic
The interaction of light and matter leads to many interesting phenomena (such as the rotation of leaves in a Crookes radiometer) and important applications (such as optical tweezers to manipulate microscopic particles). These phenomena and applications involve the momentum transfer process , And o
Graphene is a honeycomb planar film formed by sp2 hybridization of carbon atoms with a thickness of less than one nanometer. It was firstly used by Nobel Prize winners - University of Manchester physicists AndreGeim and Konstantin Novoselov for micromechanical stripping. Separated from graphite. Gr