Some new technologies such as infrared thermal imaging, laser holography and microwave testing were prospected in the testing of weld crack.
对红外热成像检测、激光全息检测和微波检测新技术在焊接裂纹检测中的应用进行了展望。
The second part is an account of experiments made in water-tank for the microwave multifrequency synthetic detecting holography.
第二部分为实验部分，叙述了多频合成微波全息探测成象的试验。
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