单词	声滞延线
释义	声滞延线acoustic delay line
随便看	permanent univalent chromosome permanent univalent chromosome--hereditary univalent chromosome permanent univalent chromosome; hereditary univalent chromosome permanent url permanent user file permanent vegetable permanent vegetation cover permanent virtual circuit permanent virtual circuit {=pvc} permanent virtual circuit--pvc permanent virtual circuit，pvc permanent virtual connection permanent virtual connection，pvc permanent virtual path connection permanent waste disposal permanent water ballast pump permanent water-proofing agent permanent wave permanent way permanent weight permanent white permanent wilting permanent wilting coefficient permanent wilting--irreversible wilting permanent wilting percentage