soil order

• 土纲

soil order的用法和样例：

例句

1. Then the Baijiang soil can he classified into alfisol class, cold alfisol subclass and albic cold luvisols class.
   据此将白浆土划归淋溶土纲，冷性淋溶亚纲，漂白冷性淋溶土土类。