本文阐述了阿达玛变换在线扫描核磁共振成象中应用原理，推出了合成的激发信号相位与阿达玛编码关系。
In this paper we explained the principle of line scan Hadamard transform NMR imaging and deducted the relation of Hadamard cede to the phase of excitation signals.
讨论了一种新的边缘检测方法，即对扫描激光束进行调制，并利用调制信号的相位突变提取边缘信号。
A new method is proposed to detect the edge through modulating scanning laser beam and picking up the phase reversal of the detection signal as the edge signal.
扫描探针显微镜- d21提供自动频率，相位和电压匹配使用模拟或离散输出信号。
The SPM-D21 provides automatic frequency, phase and voltage matching using either analog or discrete output signals.
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