“ultrasonic testing”的概念、定义、翻译、参考文献-科学参考

单词	ultrasonic testing
释义	ultrasonic testing [¦ǝl·trǝ`sän·ik `test·iŋ] ^ENGINEERING A nondestructive test method that employs high-frequency mechanical vibration energy to detect and locate structural discontinuities or differences and to measure thickness of a variety of materials.
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