短語詞組短語elevator gear reducer box 電梯減速箱gear -box cover 齒輪室蓋steering gear source box 舵機電源箱main gear -box 主減機匣gear distribution box 齒輪分配箱gear motor box 相關(guān)標簽work gear -box 作業(yè)變速箱Automation Gear -box 自動變速箱supplementary gear -box 副變速箱 返回 gear box