用SIMULINK建模之后运行在MATLAB窗口出现如下提示是什么意思?
Derivative input 1 of 'meanvaluemodle/manifold air mass flow/Integrator' at time 0 is Inf or NaN.
Warning: Division by zero in 'meanvaluemodle/Math Function'.
Warning: Division by zero in 'meanvaluemodle/manifold air mass flow/Math Function'.
Warning: Division by zero in 'meanvaluemodle/manifold air mass flow/Fcn3'.
Warning: Division by zero in 'meanvaluemodle/crank shaft and loading/Math Function1'.
Warning: Result of power is undefined in 'meanvaluemodle/crank shaft and loading/Subsystem3/Math Function2'.