【化】 regioselective reaction
area; circumscription; confine; district; extent; reach; region; section
【计】 A; area; region
【化】 band
select; choose; elect; pick; staple; choice; selection
【计】 ALT; selecting
【医】 selection
【经】 pick; select; selecting; selection
feedback; reaction; response
【医】 reaction; response
