Solved
How to Modify Default Units
How to Modify Default Units From OHM to OHM(DCR).
Thanks.

How to Modify Default Units From OHM to OHM(DCR).
Thanks.

This reply is from Akim in Shanghai.
Would you please refer below article try change to the Default Unit for your system ?
How to add custom Unit or hide OOTB "default unit" for WTParts in Windchill PDMLink
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