词汇	恒定的P-R间期
释义	恒定的P-R间期医constant P-R interval
随便看	electrostatic fluidized bed electrostaticfluidized bed coating electrostatic fluidized bed coating electrostatic-fluidized bed coating electrostatic flux electrostatic flux density electrostatic fluxmeter electrostatic focus electrostatic focused klystron electrostatic focus gun electrostatic-focus gun electrostatic focusing electro static focusing electro-static focusing electrostatic focusing field electrostatic focusing indicator tube electrostatic focusing klystron electrostatic focusing lens electrostatic focusing potentials electrostatic focusing system electrostatic, focusing transit-time tube electrostatic focusing TWT electrostatic fodce electrostatic force electrostatic fundamental experiments