“permanent echo”的概念、定义、翻译、参考文献-科学参考

单词	permanent echo
释义	permanent echo [`pǝr·mǝ·nǝnt `ek·ō] ^{ELECTROMAGNETISM} A signal reflected from an object that is fixed with respect to a radar site.
随便看	saprolite saprolith sapropel sapropel-clay sapropelic coal sapropelite sapropel-peat saprophage saprophyte saprovore saprozoic sapwood Sapygidae sarah Sarcina sarcochore Sarcodina sarcoglia sarcoidosis sarcolemma sarcoleukemia sarcoma sarcoma botryoides Sarcomastigophora sarcomatosis

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