摘要:Gross fixed capital formation (GFCF) is a macroeconomic concept used in official national accounts su[阅读全文:]
摘要:In economics and finance, marginal cost is the change in total cost that arises when the quantity pro[阅读全文:]
摘要:Capacity utilization is a concept in economics which refers to the extent to which an enterprise or a[阅读全文:]
摘要:Petroleum coke (often abbreviated Pet coke or petcoke) is a carbonaceous solid derived from oil refin[阅读全文:]
摘要:Section Beams are made of steel and they have a specific lengths and shapesSection beam like I-b[阅读全文:]
摘要:PipingWithin industry, piping is a system of pipes used to convey fluids Piping(liquids and gases) fr[阅读全文:]
摘要:Pipeline transport is the transportation of goods through a pipe. Most commonly,Pipeline transport&nb[阅读全文:]
摘要:A pipe and tube bender is a machine which bends tube, pipe and solid metals. Pipe and tube benderPipe[阅读全文:]
摘要:Ductile iron pipe is a pipe commonly used for potable water distribution and the Ductile iron pipepum[阅读全文:]
摘要:Cast iron pipe is a historical pipe which found widespread use as a pressure pipeCast iron pipe [阅读全文:]
