电机转速公式: n=（1-s）n0=60（1-s）f /p 其中 s—转差率； n0—同步转速；

第四章空间力系 4.1已知F1=100N,F2=300N,F3=200N,作用位 置及尺寸如图(a)所示;

1 The eigenvalue distribution function For an N × N matrix AN , the eigenvalue distribution function 1 (e.d.f.) F AN (x) is defined as F AN (x) = Number of eigenvalues of AN ≤ x . (1) N As defined, the e.d.f. is right continuous and possibly atomic i.e. with step discontinuities at discrete points. In practical terms, the derivative of (1), referred to as the (eigenvalue) level density, is simply the

第四章空间力系 4.1已知F1=100N,F2=300N,F3=200N,作用位 置及尺寸如图(a)所示; 求力系向O点简化的结果

一、基本概念 (1)独立增量过程 定义:设{X(t),t∈T}是一随机过程,如果对于任意的 t2<…