单词	valence link
释义	valence link 价键
随便看	conference system conference-table conference table conference tables conference-tables conference tariff conference (telegraph) repeater conference telegraph repeater conference telephone conference telephone central board conference telephone control board conference telephone device conference telephone of full-distribution system conference telephone subset conference telephone switch system conference telephone system conference telephone tandem board conference telephone tandem exchange conference television system conference terms conferencewide conferencia conferencier conferenciers conferencing sebf sebh sebj sebjtebw sebl sebs sebx sebz secg secz 63389 63390 63391 63392 63393 63394 63395 63396 63397 63398