声
纳
探
测
针
s
h
ē
n
g
n
à
t
à
n
c
è
z
h
ē
n
Definitions
1. dipping sonar from helicopter
Components
声纳
shēng nà
–
sonar (sound navigation and ranging) (loanword)
探测
tàn cè
–
to probe
针
zhēn
–
needle