Pump standard summary

standard encdoing Standard Chinese name Standard English name SY / T0403-98 Oil pump construction and acceptance specifications SY / T5059-2000 Combination pump cartridge pump SY / T6142-1995 Oil field set with oil pump procurement rules SY / T5587.12-93 Oil and water wells routine worko

The crisis facing the LED lighting industry

For the lighting industry in 2014, it is not destined to be an ordinary year. Lei X Lighting, after Wuhan, Hubei and Hangzhou, Hangzhou, once again replaced the Guangdong Shenzhen operation center candidates; Yiguang and Wu Zhengyi broke up and the product was acquired by Wei Wei 120 million, the or

New models drive EU electric vehicle sales to double

According to the “Guardian” report, the EU’s electric vehicle sales have doubled in 2013 due to the stimulation and promotion of new models, but there are only 250 ZEVs for every 250 new vehicles sold. Nowadays, electric vehicles have become an important measure for gov

Research on Database Layer in CNC Machine Tools

The digital static architecture system is divided into three layers in the static architecture design: database layer, middle layer and user layer. The database uses Oracle 9i, the database model uses EDM. The middle layer uses Sun V890 as the Tomcat and Apache application server. At the same ti

Dynamic taxi surcharge pricing model

Based on the advancement of technology, we can determine the position of the vehicle on the road. In this way, we can induce a shift in taxi pricing patterns rather than a fixed and complex form. We should consider a dynamic taxi fare plan. The su