olemus
(a) korraga mitmel eri liinil mõõtev elektrienergia arvesti
= an energy meter that measures electricity on several different lines at the same time

(b) mitmele energialiigile sobiv arvesti
= a meter suitable for several types of energy

näiteid
https://duckduckgo.com/?q=multi-energy+meter&t=h_&iax=images&ia=images