中文说明：梁的结构动力计算程序，包含Euler梁和Timoshenko梁。梁的结构动力计算程序，包含Euler梁和Timoshenko梁。梁的结构动力计算程序，包含Euler梁和Timoshenko梁。梁的结构动力计算程序，包含Euler梁和Timoshenko梁。梁的结构动力计算程序，包含Euler梁和Timoshenko梁。梁的结构动力计算程序，包含Euler梁和Timoshenko梁。梁的结构动力计算程序，包含Euler梁和Timoshenko梁。
English Description：
The structural dynamic calculation program of beam includes Euler beam and Timoshenko beam. The structural dynamic calculation program of beam includes Euler beam and Timoshenko beam. The structural dynamic calculation program of beam includes Euler beam and Timoshenko beam. The structural dynamic calculation program of beam includes Euler beam and Timoshenko beam. The structural dynamic calculation program of beam includes Euler beam and Timoshenko beam. The structural dynamic calculation program of beam includes Euler beam and Timoshenko beam. The structural dynamic calculation program of beam includes Euler beam and Timoshenko beam.