As the vibrating frequency decreased and temperature increased, the real part of complex modulus of ZL401 alloy increased.

ZL4 0 1合金振动过程中实模量的亏损随频率的降低和温度的升高而增大。

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In fact, it can generally be a complex number with both a "real" part that's an ordinary number and an "imaginary" part that's multiplied by the square root of one.

事实上，它通常是一个复数的形式，包括普通数字的实数部分和需要乘以负一的平方根的虚部。

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The results show that the propagation speed of the wave is not equal to the speed of energy flux, but nearly equal to the real part of the complex group velocity.

结果表明，波的传播速度并不等于能流速度，而与复群速度的实部近似相等。

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