cente-of-mass system

• 质心系统

cente-of-mass system的用法和样例：

例句

1. Through the help of scientific machine detecting, we find out she has the genital weakness in her left kidney meridian system, heart weakness, normal pressure, and liver cirrhosis.
   经能量医学仪器检测，发现为左肾经络系统先天不足，心系统偏弱，压力指数尚可，肝硬化的能量频谱。