zero-in-on

US /ˈzɪr.oʊ/
UK /ˈzɪr.oʊ/
1.

歸零

to aim a weapon directly at something or someone:

:
•
Modern military aircraft use computers to help them zero in on their targets.
:
zerozero-emissionground zeropatient zerozero gravityabsolute zerozero hour