fixed amplitude meaning in English

稳幅

These are oscillations of fixed amplitude and frequency which can be sustained in the feedback loop even if the system input is zero
其振荡以固定的幅值和频率在反馈环中维持即使系统的输入为零。
Moreover , the driving system is an important part of cmf . it supplies the driving force for flow tubes , and makes flow tubes oscillate at their natural frequency and the fixed amplitude . at the same time the oscillation frequency of the driving system can change with the natural frequency of flow tubes
同时，驱动系统是科里奥利质量流量计的重要组成部分之一，它为流量管提供驱动力，使流量管以其固有频率和稳定的振幅振动，并且能够跟随流量管固有频率的变化而变化。