词汇	sub bottom profiler
释义	sub bottom profiler 浅地层剖面仪
随便看	change-over switch for voltmeter change over switching change-over switching change-over switching operation change-over switchthrow-over switch, commutator changeover system change over system change-over system changeover time change over time change-over time changeover timetable change over to change over to manufacture on imported models change-over to manufacture on imported models change over to new ways Change over to US format changeover trial changeover valve change over valve change-over valve changeover vontact unit change owner change owners change ownership