四极quadrupole
【化】 四极质谱仪quadrupole mass spectrometer(QMS)
三节四极质谱仪triple-stage quadrupole mass spectrometer, TSQ[MS]
四极子quadrupole
偶极-四极相互作用dipole-quadrupole interaction
聚焦四极磁铁focusing quadrupole magnet
轴向四极axial quadrupole【电磁】
核四极矩共振谱法nuclear quadrupole resonance spectrometry【分化】