amplitude variation ==> 振幅变化,波幅变化 amplitude versus frequency response characteristic ==> 幅频响应特性,幅频响应特性曲线 .
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振幅锥度，振幅衰减 amplitude taper 波幅变化，振幅变化 amplitude variation 幅度-频率响应特性 amplitude versus frequency response characteristic ..
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... 振幅测试卡座 amplitude test cassette 振幅变动 amplitude variation 幅频失真 amplitude vs. frequency distortion ...
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amplitude of variation 幅度变化 ; 变幅
amplitude variation mechanism 变幅机构
ratio of daily amplitude variation 日变幅逐日比
amplitude variation reversible mechanism 变幅翻转机构
amplitude variation characteristics with offset 振幅随偏移距变化特征
strain variation amplitude 变形变化幅度
amplitude of annual variation [农经] 年较差
The amplitude variation of reflection were influenced and controlled by many factors.
地震波反射振幅的变化受诸多因素的影响和控制。
The amplitude variation of seiches is related to the air pressure, wind field and rainfall above the lake.
定振波振幅的突变与气压场、风场和降水分布不均匀并在短期内发生突变有关。
The results show that the phase difference and the amplitude variation can be considered as the criteria of seam tracing.
结果表明： 对称位置接收到的声发射信号的相位差和幅值差可以作为电弧超声焊缝跟踪的依据。
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