词汇	轴对称电子枪
释义	轴对称电子枪 axisymmetrical gun
随便看	underwater sound apparatus underwater sound channel underwater sound communication underwater sound communication set underwater sound communication system underwater sound countermeasure underwater sound device underwater sound engineering underwater sound equipment underwater sound equipment compartment underwater sound field underwater sound gear underwater sound generator under water sounding underwater soundings underwater sound instrument underwater sound integrated measuring set underwater sound investigation ship underwater sound jammer underwater sound laboratory underwater sound measurement underwater sound physics underwater sound-pressure microphone underwater sound project underwater sound projector