短語詞組短語potential energy gradient 勢能梯度potential temperature gradient 位溫梯度potential l gradient 勢梯度moist potential vorticity gradient 濕位渦梯度potential -gradient detector 電勢梯度檢測器electric potential gradient [電磁]電位梯度water potential gradient [土壤]水勢梯度;梯度face potential gradient 表面電位梯度disruptive potential gradient 擊穿電位梯度;擊穿電勢陡度 返回 potential gradient