Csia definations:
Skidding-the sideway travel of one or both skis across the snow. Neccessary for speed control
Sliding - the forward travel of one or both skis on the snow
Tipping=banking
The tipping of the shoulders and upper body into the turn. Generally unstable position and often associated with rotation
这是在说ksia吗
PSIA's definition: banking: "Whole-body tipping, with the line of action perpendicular to the base of support. Inclination of the entire body without angulation."