提出胶管组合件的设计参数和要点.The designing parameters and the main points are offered.NBR胶板, 胶条,胶管, 胶棒. 硅胶板,条, 管.NBR sheet Plastic strips, hoses, Jiaobang . Silica gel plates, of the tube.将放喷和压井胶管与伸缩节连通.Connect the choke and kill lin...
Titanium in the pure state can exist in either of two allotropic forms.纯钛以两种同素异形的形式存在.Carbon and sulfur and phosphorus are allotropic elements.碳、硫磺和磷是同素异形元素.Ozone ( O 3 ) is allotropic form of oxygen ( O 2 ) with three a...