Unit Weigh

• 单位重量

Unit Weigh的用法和样例：

例句

1. Perhaps a key adaptive advantage of the angiosperm is their ability to construct wood with much less expenditure of energy per unit weight.
   也许被子植物适应优势的秘诀就在于它们有能力形成每单位重量的木材可支付少得多的能。