closed circular dna

• 闭环

closed circular dna的用法和样例：

例句

1. The influences of the driving error and hysterisis error to the closed servo system were analyzed and their calculation methods have been put forward.
   分析闭环伺服系统前向通道上精密传动装置的传动误差和回程误差对伺服系统性能的影响，提出计算方法。