专利名称:Length mode piezoelectric ultrasonic
transducer for inspection of solid objects 发明人:Robert B. Thompson
申请号:US05/696679
申请日:19760616
公开号:US04122725A
英语大闯关公开日:
于化龙
最好的礼物19781031
高跟鞋英文
专利内容由知识产权出版社提供
宝宝脚外翻怎么办摘要:The transducer is constructed from individual transducer elements arranged in an array and configured to exhibit a predominant, longitudinal mode transverly to the array. The elements are interconnected through thin flexible sheets. Each element is individually damped, and the transducer as a whole is electrically damped through resonance with the clamped capacitance and dissipation. Electrical control permits in-pha operation of all transducer elements or control with prelected pha differences.朗诵比赛主持稿
孩子注意力不集中申请人:THE UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION
体育旅游代理人:Carl O. McClenny,John R. Manning,Marvin F. Matthews
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