初生

Protoxylem The PRIMARY XYLEM elements that are formed from the procambium first.

初生木质部成分，最早由原成层成。

The eggshells crackled, and the turkey babies fluttered and cheeped and snuggled against me.

蛋壳裂开了，初生拍动着翅膀，卿卿地叫着，偎依着我。

The cross section morphology and skin-core structure of PAN fiber in wet-spinning are analyzed by the means of electron probe microanalyser (EPMA) and scanning electron microscope (SEM).

结果明凝固浴温度会影响初生纤维横截与芯部结构。