短語詞組短語difference of level surface 水準(zhǔn)麪差difference of technology level 技術(shù)水平差異difference of water level 水位差matening difference of water level 水位擬郃誤差difference of instantaneous water level 瞬時水位差difference in level of trade 不同交易層次之調(diào)整difference of county -level economy 縣域經(jīng)濟差異difference of the gray -level 鄰域灰度差值 返回 difference of level