electrstatic repulision
静电反射束摄像管

• nitrogen pulse laer
• nitrogen resonance line
• nitrometer
• nitrous oxide
• nixie tube
• N-matrix
• NMR spectrometer
• nno-conservation
• noble gas
• noble gas dimer laser
• noble gas ion laser
• noble gas laser
• noble metal thermocouple
• noctilcent
• noctilucence
• noctilucent cloud
• nocto televison
• noctovisor
• noctriso
• nocturnal radiation
• nodal
• nodal circle
• noda line
• nodality
• nodal plane