Declaring Python variables. There are two phases of creating a variable: 1  First, you need to initialize a variable by creating a container and assign it a name. 2  This is called initialization. 3  Second, you assign value to the the variable. 4  This is known as assignment.
Cylindricity-Cylindricity describes a condition of a surface of revolution in which all points of a surface are equidistant from a common axis. Symbol: . Cylindricity controls a cylindricals features element such that the total variations are minimized during manufacturing.
of the fold. Cylindricity Cylindrical folds Folds are often drawn as cylindrical structures, meaning that the fold axis is a straight line which, when moved parallel to itself, generates any single fold of the same generation. The axis of cylindricity is parallel to the fold axis.