单词	radius ratio
释义	radius ratio 半径比
随便看	learning rate learning readiness learning reform learning region learning regulation ability learning regulation pattern learning reinforcement learning-related learning remote control Learning remote controller learning remote control switch learning removement learning-repository learning research learning-researchingproducing learning-research-proctuctlon learning resource learning resource center Learning resource developing learning resource exchange program learning resource guide learning resource-oriented Learning Resource Repository learning resources learning resources bank