sieve tube
柯林斯词典
1. N an element of phloem tissue consisting of a longitudinal row of thin-walled elongated cells with perforations in their connecting walls through which food materials pass 篩琯[botany]
返回 sieve tube
1. N an element of phloem tissue consisting of a longitudinal row of thin-walled elongated cells with perforations in their connecting walls through which food materials pass 篩琯[botany]