Theoverallbasisforpipelinematerialselectionistoensureeconomicandsafeproducttransport.Duringthepipelinedesignphases,thematerialengineeringincludesdifferentactivitieswheretheconceptualdesignphasenormallyfocusonidentifyingthematerialrequirementsintermsof:(1) (共 1479 字) [閱讀本文] >>