According to the feature of contacting measurement, the dissertation first puts forward the twice-sampling planning method for free-form surface in order to improve measuring efficiency.
根据接触测量的特点，为提高测量效率，本文提出了一种两次采样的曲面数字化规划方法。
The solution for linking twice sampling cycles, enhancing resolution of measurement of rotating speed, isolating and processing keying phase signal, are investigated.
探讨了两次采样循环之间的衔接、提高转速测量分辨率、键相位信号的隔离和预处理等问题的解决方案。
The Nyquist law is applied to all the conventional compression coding algorithms, which prescribes that the sampling rate must be at least as twice as the signal frequency.
在传统的压缩编码技术中，采样均遵循奈奎斯特定律，该定律规定采样速率要高于原信号频率的两倍。
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