1)trochoidal electron monochromator,余摆线电子单色仪2)trochoidal mass spectrometer,余摆线质谱仪3)trochotron['trəukətrɔn],余摆磁旋管，摆线磁控管;电子转换器，电子滚线管，摆线管4)trochoidal focusing mass spectrometer,余摆线聚焦质谱仪5)trochoidal mass analyzer,余摆式质谱分析仪;次摆线质谱仪6)photon monochromator,光子单色仪
