Kuv tso tawm "---" ntawm lub electrode PH meter thaum debugging, yog li nws zoo li muaj teeb meem nrog cov electrode. Kuv tsis paub tias puas muaj tshuaj kho tau zoo
Qhov ntsuas qhov ntau yog tawm ntawm qhov ntau. Yog vim li cas tej zaum yuav yog vim li cas electrode thaiv, los yog electrode tawg. . Hauv luv luv, qhov tshwm sim ntawm cov teeb meem electrode yog siab heev
