Merge pull request #671 from alibaba-damo-academy/dev_lhn

hnluo

2023-06-27 a19c9e5c805d727d2d0a81053997d70e3326e3cb

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beam_size: 5
penalty: 0.0
maxlenratio: 0.0
minlenratio: 0.0
ctc_weight: 0.5
lm_weight: 0.7