Lelee ntọala pipụ, usoro ntinye na njikọ waya.Kwado ma ọ bụrụ na etinyere ngwakọta njikọ ahụ nke ọma, ọkpọkọ ahụ juputara na mmiri mmiri, oghere transducer na-ekwenye na ọgụgụ ihuenyo ma tinye ndị transducers n'ụzọ ziri ezi.
Oge nzipu: Mee-07-2022