数据库原理-课程设计：高校学籍管理系统.doc

requirements each only valve installaon a only support hanging frame, if two valve clearance is less than 5D (d for pipeline OD), is in Middle loaded a only support hanging frame can; pipeline has mulple valve adjacent, requirements in valve group of sides the loaded a only support hanging frame, if middle has di!erent diameter valve, is requirements in the valve Shang installaon bracket or in the valve sides size head at the loaded a only support hanging frame. Designs should fully take into account

expansion

2

requirements each only valve installaon a only support hanging frame, if two valve clearance is less than 5D (d for pipeline OD), is in Middle loaded a only support hanging frame can; pipeline has mulple valve adjacent, requirements in valve group of sides the loaded a only support hanging frame, if middle has di!erent diameter valve, is requirements in the valve Shang installaon bracket or in the valve sides size head at the loaded a only support hanging frame. Designs should fully take into account

expansion

4