| 摘要 |
A waveguide is provided, particularly for use in acoustic emission applications involving a hostile environment, comprised of a member selected from the group consisting of aluminum oxide and beryllium oxide. The waveguide is solid in form, and varies in length depending upon the specific application or use of the waveguide and the frequency of the signal. Size varies inversely to frequency levels. The cross sectional dimension will vary depending upon application, and will generally conform to the size of the crystal sensor element being utilized in a particular application.
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