实验发现采用设计的四倍频激光探针时，探针信号强度不够，因此改用二倍频激光探针。
The experimental results indicate that the signal intensity is not strong enough when using quadruple frequency laser probe. Therefore, we choose double frequency laser as the probe.
结合探针信号的自相关函数，研究流场湍流结构，发现近尾可能存在大涡拟序结构，而在远尾则没有湍流。
By studying the autocorrelation function of the probe signal, it is found that the large eddy quasi ordering structure likely exists in near wake, but there is no turbulence in far wake.
探针的后端的电线连接到电脑，将电信号翻译成心跳图、脑波图或其它什么。
Wires attached to the back of the probe lead to a computer that translates the electrical signals into a picture of the heartbeat, brainwave or whatever.
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