The research shows that influence of sample variation coefficient on estimated accuracy should be considered.

研究表明，应考虑样本变差系数对估计精度的影响。

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Serving as the question for study with identification of the frequency response function of the linear system, the effects of noises for estimated accuracy are discussed.

以线性系统频率响应函数的辨识为研究课题，对系统辨识中所面临的各种干扰噪声对模型精度估计的影响进行了系统的研究。

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Fortunately, the correct cutting speed can be estimated with reasonable accuracy from tool-life graphs or from the Taylor tool life Relationship, provided that necessary data are obtainable.

幸好，正确的切割速度可以根据刀具寿命表或者刀具寿命泰勒方程估算出来，并有一定的合理精度，如果在必要的数据都具备的前提下。

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But he explained that a spacecraft's orbit lifetime could only be estimated to about 10% accuracy.

BBC: Nasa refines satellite crash time

Raytheon is the prime contractor for the PAC-2 Patriot system--much improved since its dismal accuracy in the Gulf war of 1991--and supplies an estimated 50% to 65% of the newer PAC-3 system.

FORBES: Ready, Aim, Fire