Sino-Vietnamese word from 倍數.
- (Hà Nội) IPA(key): [ʔɓoj˧˨ʔ so˧˦]
- (Huế) IPA(key): [ʔɓoj˨˩ʔ ʂow˨˩˦] ~ [ʔɓoj˨˩ʔ sow˨˩˦] invalid IPA characters (][)
- (Saigon) IPA(key): [ʔɓoj˨˩˨ ʂow˦˥] ~ [ʔɓoj˨˩˨ sow˦˥] invalid IPA characters (][)
bội số
- (mathematics) multiple