请问后面的=号是什么意思？

var
  Time1        : real = 0;  {sec}
  DTime        : real = 5;
  Channel1     : integer = 1;
  Channel2     : integer = 2;
  Channel3     : integer = 3;
  Channel4     : integer = 4;
  NChannel     : integer = 1;
  Ntick        : integer = 1;
  Fd           : real = 24000;
  X,Y1,Y2,Y3,Y4: array of Single;
  //X,Y: array of Single;