アコースティックエミッションでしょう
akōsutikku emisshondeshō
1. Probably acoustic emission.
Noun
1. Probably acoustic emission.
1. acoustic (instrument, music, etc.)
1. it seems; I think
2. right?; don't you agree?
1. acoustic guitar
1. acoustic guitar
1. zero-emission
1. emission
1. acoustic emission
1. acoustic sound
1. zero-emission