这个原始的管状结构,由纤维素和非纤维物质构成,称作初生层。
This initial layer formed of both cellulosic and non cellulosic materials is called the primary wall.
这个原始的管状结构,由纤维素和非纤维物质构成,称作初生层。
This initial layer, formed of both cellulosic and noncellulosic materials, is called the primary wall.
形成层的向顶分化像初生根伸长一样在继续进行。
Acropetal differentiation of the cambium layer continues as the primary root elongates.
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