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发明名称
Ultrasonic method for measurement of size of any flaw within solid mass
摘要
申请公布号
US4914952(A)
申请公布日期
1990.04.10
申请号
US19880215752
申请日期
1988.07.06
申请人
HITACHI CONSTRUCTION MACHINERY, CO., LTD.
发明人
MIYAJIMA, TAKESHI;OGURA, YUKIO;TOMITA, SADAHISA
分类号
G01N29/07;G01N29/11;G01N29/30;G01N29/44;G01N29/48
主分类号
G01N29/07
代理机构
代理人
主权项
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