单词	theory base
释义	theory base 理论基础
随便看	backward transfer backward transfer admittance backward transfer character backward transfer characteristic backward transfer character istic backward transfer characteristics backward-transfer signal backward transter character backward travel backward traveling wave backward travelling wave backward-travelling wave tube backward tree backward type backward underswing on horizontal bar backward uniqueness backward unlinkability backward unloading elevator backward urging advantage backward vane backward vaned fan backward version management backward vertical integration backward vesistor backward vision