单词	初[达]波--p波
释义	P波；初[达]波Primary wave（P-wave）
随便看	negative crystal negative--crystal negative current negative cut off grid voltage negative cutting negatived negative damping factor negative dc disconnect switch negative debt negative declaration negative definite negative definite form negative definite function negative definite hermitian matrix negative definite matrix negative definiteness negative definite quadratic form negative definition negative delta negative demand negative dendrite negative detector negative detector power supply board negative detector signal discrepancy alarm negative development