Merge pull request #318 from alibaba-damo-academy/dev_lhn

hnluo

2023-03-30 f404864938df71516c2d671a23b99933f1efea85

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beam_size: 10
penalty: 0.0
maxlenratio: 0.0
minlenratio: 0.0
ctc_weight: 0.5
lm_weight: 0.7