external characteristic的用法和样例：
例句
- External torques arise from outside the system.
外转矩是由系统外部生产的。 - Four types of external balances are in general use.
通常使用的外式天平有四种。 - This paper analyzes the dynamic characteristic of complex plywood by the theory modal analysis technology.
摘要以悬臂复合层板为研究对象，利用理论模态分析技术，研究了复合层板的动态特性。 - Meanwhile, two examples about calibrating transducer's dynamic response characteristic are given.
同时，给出了采用正弦压力发生器校准传感器动态特性的两个实例。
