动力学仿真，包括频域响应和时域响应，包括单自由度和多自由度的-Dynamics simulation, including frequency response and time domain response, including the single degree of freedom and multi degree of freedom

Implementation of a simple C++ quaternion class called Squat . Popularized by a seminal paper by Ken Shoemake, a quaternion represents a rotation about an axis. Squats can be concatenated together via the * and *= operators and converted back and for

matlab code for Hatch fill patterns plus Color & Invert