摘要
指出了共振法测定动态杨氏模量实验中存在相位不一致且频率变化引起的误差 ,提出了在输入端串接补偿线圈和交流恒流源的改进方法 .
The phase variance and error caused by frequency change, which exist in the experiment of measuring dynamic Young modulus by resonance method, are analyzed. By connecting coil and AC constant current source in series, the experiment device is improved.
出处
《物理实验》
北大核心
2004年第2期41-42,46,共3页
Physics Experimentation
