单词	质子中子模型
释义	质子中子模型proton-neutron model
随便看	balanced armature relay balanced armature unit balanced array balanced articulation balanced assignment problem balanced-beam relay balanced bellow balanced bellow valve balanced binary search tree balanced binary system balanced binary tree balanced blast balanced blast cupola balanced block design balanced bootstrap balanced bridge balanced bridge modulator balanced-bridge power meter balanced bridge sensor balanced bridge transition balanced budget balanced budget amendment balanced budget and emergency deficit control act balanced-budget incidence balanced budget multiplier