Any system capable of a free vibration without external force is a counter example, e. g. a wire in the piano.
任何一个无外力而能自由振动的系统就是一个反例，譬如钢琴中的一条钢丝。
2
Cause of water flowing into roll box, problem existing normally in high - speed wire rolling, is analyzed as well as the counter-measures.
针对高速线材轧制过程中轧辊箱进水这一普遍存在的问题，分析轧辊箱进水的原因及相应对策。
3
When using pulse counting method, the precision of pressure-measuring with vibrating-wire sensor is influenced by the precision of pulse counter, circuit noise, temperature compensation, etc.