Mawonekedwe: Kugwiritsa ntchito ukadaulo wamagetsi ang'onoang'ono, kuzungulira kwa 1 sekondi, batire yoyendetsedwa (moyo wa batri ≥6 zaka) Kugwiritsa ntchito ukadaulo woyezera kuthamanga kwa ma acoustic, kumatha kukwaniritsa kuyika kwamakona angapo, chidacho sichimakhudzidwa ndi kuyeza, kapangidwe kachubu kachubu, ayi. pressure loss Yatsani chitetezo...
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