1. Imọ-ẹrọ Micropower, akoko wiwọn 1 keji, agbara batiri (igbesi aye batiri ≥10 ọdun) 2. Lilo imọ-ẹrọ wiwọn ṣiṣan acoustic, le mọ fifi sori igun-pupọ, ohun elo ko ni ipa nipasẹ wiwọn, iwọn ila opin apẹrẹ tube, ko si pipadanu titẹ 3. Agbara pipa aabo iṣẹ, ...
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