平方计算器
专利名称：Ultrasonic testing of materials
发明人：Flora, John H.,Powers, Thomas, Jr.
申请号：EP86300131
申请日：19860109
公开号：EP0188335A3
牵拖公开日：
3画的字有哪些
火柴人电影19870916
专利内容由知识产权出版社提供
专利附图：
摘要：Ultrasonic waves are transmitted from a transducer (10) into a material (14)being tested to produce reflected ultrasonic signals from each of a plurality of locations along a scan path (12) over the material (14). The reflected signal for each Individual location is stored and added to contributing signals from each of the other locations to
来如春梦
produce a composite signal which has a good signal-to-noi ratio. The contributing signal from each of the other locations is formed by multiplying the signal from that other location by a corrective pha shift factor which is a characteristic of a time delay for the reflected signal from that other location to the individual location of interest. The contributing signal from each of the other locations thus reprents a rotated reflected signal from that other location.
革命英雄图片申请人：THE BABCOCK & WILCOX COMPANY
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