construction unit

• 结构单元

construction unit的用法和样例：

例句

1. The basic structural unit of yarn is the fiber.
   纤维是纱的基本结构单元。
2. Its morphological structure unit is a rodlike macromolecule which drrdnges regularly to form domdins, then these domains pack further to form a rodlike submicroscopic structure.
   其形态结构单元是由棒状分子规整排列形成的微区。