protophloem

protophloem什么意思,protophloem翻译

基本解释

网络: 原生韧皮部；早成韧皮部；原始靭皮部

例句

• It consists of the PROTOPHLOEM (formed first) and METAPHLOEM.

  由原生韧皮部（最早形成的）和后生韧皮部组成。