When you import a part, you can choose to maintain the dimensions stored in the file, or you can change the scale of the part during the import process. You can do the following:
Enter a scale factor that Abaqus/CAE will apply to all of the coordinates in the file. Any offset from the origin will be scaled accordingly.
If you are importing a part from an ACIS file, you can read the scale factor, the rotation matrix, and the translation matrix from the file.