1.Exactly. It must be renewed every year. Our county follows the priority of use principle.
没错，每隔一年必须更新。我国实行先使用，先拥有的原则。
2.Other countries prefer the priority - of - use principle. U. S. A belongs to this group .
其他国家更青睐优先使用原则，美国属于这一种。
3.Cost-or-market method is abided by commonly continue to use principle and replace sexual principle.
成本法一般遵循继续使用原则和替代性原则。
4.Research on use principle and management model of governmental reserved water
政府预留水量动用原则与管理模式研究
5.It is shallow to talk strain gauge load cell choose and use principle
电阻式应变称重传感器选用与使用原则浅谈