A-operator method (AOM) is used to study the influence of the torque fluctuation and time-varying meshing stiffness on rattling threshold speed of the gear system.
用算符分解算法(AOM)研究了扭矩波动和时变啮合刚度对拍击门槛转速的影响。
With such an interest a fluctuation in the market unnerves the operator, and his judgment becomes worthless.
正因为收益大，所以市场的任何波动都会让操作者紧张，他的判断就不再有价值了。
However, RMS deviation only contains the second-order statistical moments of the density operator. Thus under many circumstances, RMS deviation cannot precisely measure the quantum fluctuation.
由于均方根偏差只涉及光场密度矩阵的二阶统计矩，在许多情况下，这种物理量不能精确量度光场的量子涨落。
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