Each of these pieces is a sine wave with a different frequency. 每個(gè)小部分是有著(zhù)不同頻率的正弦波。
First carries on the modal analysis experiment, analyzes under the different frequency weldment's vibration characteristic. 首先進(jìn)行模態(tài)分析實(shí)驗，分析出在不同頻率下焊接件的振動(dòng)特性。
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