作者回复：
This is correct.
In AMS2023 find_bond() will also work for periodic bonds. Note that this mainly works if one calls e.g. get_main_molecule() on an AMSResults (where AMS has already determined the periodic bonds).
The PLAMS guess_bonds() feature does not work for periodic bonds, also not in AMS2023. I've added an example at https://www.scm.com/doc.2023/plams/examples/ConvertToAMSRKFTrajectory.html for how to convert from an external format to AMS format with bond guessing. But this only works in AMS2023.