知识贝壳
知识贝壳
所属栏目：海洋工程柔性立管与海底管道
Weldingisafabricationprocessthatjoinsmaterials,usuallymetalsorthermoplastics.Themainideaistobondthesurfacestogetherbyliquefyingthematerialsurfacesandthereafterallowingtheliquidtosolidify.Attheendofthisprocessthetwopiecesofmaterialhavebecomeonecontinuousso ......（本文共 1406 字 ） [阅读本文] >>