point availability
1.The availability of some function as either standard or optional features, for example, byte manipulate, floating-point instructions, or double precision.
2.The influence of secondary suspension distribution,wheel wearing,coupler height,primary and secondary vertical suspension stiffness,traction height of per bogie,distance from suspension point of traction motor to centerline of axle,between centers of two bogies and wheelbase on adhesion availability of B0-B0-B0 axle hung locomotive is analyzed.
3.Project information portal improves the stability, accuracy and time-preserving of project communication and availability and reusability of information by centralizing the project information and providing the single point of access. In addition, it provides powerful support to construction process reengineering in the environment of Internet.

