单词	boundary echo
释义	boundary echo 边界回波
随便看	unit count unit couple unit cross-sectional area unit cross sectional area unit crystal unit cube unit current repair unit data unit deformation unit delay unit delay command unit delay filter unit-delay operator unit delay operator unit delay predictor unit delay time unit deletion unit depreciation unit depreciation method unit derated capacity unit derated factor unit derating unit design unit designation list unit design walkthrough 夜静山空歇又闻夜静春山空夜飞延秋门上呼大书东壁大人岘屼当安之大儿聪明到大儿锄豆溪东大军徒涉水如汤大别我知友大历二年十月十九日苦瓜苦界苦痛苦盃苦笑苦笑い苦笑イ苦節苦肉苦肉の策