system of unit

• 单位制

system of unit的用法和样例：

例句

1. There are two systems of units in common use in mechanics.
   在力学中通用两种单位制。
2. The working unit system and community system are important governance modes in our country.
   摘要单位制和社区制是我国城市社会治理的两大重要模式。