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0 Preface
The hydrogenation device was first developed by Germany in the early 20th century. At that time, Germany lacked oil resources and was compensated by hydrogenation of coal tar. After the end of the Second World War, the hydrogenation process was greatly developed in the pr…
General industrial indicators for sandstone -type uranium deposits
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When the low-carbon economy has become a global consensus, Shanxi, as China’s largest heavy truck consumption area, is also facing the requirements of energy saving, environmental protection, and low emissions. On June 3, at the Truck Logistics Exhibition held in the Shanx… Pneumatic diaphragm pump operation Notes: Pneumatic diaphragm pump is a compressed air-powered, through the diaphragm reciprocating deformation volume changes caused by the volume of the pump, the working principle is similar to the piston pump. The use of pneumatic diaphragm pump o… Mexico decides to impose 50% import tariff on Japanese cars According to overseas media reports, the Mexican government has announced that it will impose a 50% tariff on cars imported from Japan from January 1, 2004. Since it is difficult to make progress on the negotiations on agricultur… Cooper C-8 series air compressor surge failure analysis and countermeasures Yan Jiabiao Foshan Deli Messer Gas Co., Ltd., Foshan, Guangdong 52805) This Stig Bo S7 (3) å© weakness =) Jue window type, on the throat = 耢Muscle, special analysis, tipping females to increase the toe 1… |