单词	潘宁[陷]阱
释义	潘宁[陷]阱Penning trap
随便看	first timer first-timer first time step first to file principle first track first trail print first train first transfinite ordinal number first transition first transition mesial point first transition peak mesial point first transition peak to peak mesial point first transition percent point first transition series first transverse number first triumvirate first trochanter first twist first twist; lower twist; preliminary twist first type surface first up first uranium inventory [of core] first use first used date/time first vapor