基本解釋[農(nóng)業(yè)科學(xué)]溝谷密度[地球科學(xué)]溝壑密度溝道密度英漢例句雙語(yǔ)例句Thirdly, according to the research needs, selected gully length, gully width, gully density and vertical slope as the evaluation index.根據(jù)本研究的需要,選取溝道長(zhǎng)度、溝道寬度、溝壑密度和縱比降作為分析溝道變化的判別指標(biāo)。Secondly, utilized DEM to extract factors related channel: slope, aspect, gully length, gully depth, ravines density, vertical slope, and gully width through 2 TM images.然后利用DEM提取與溝道相關(guān)的因子:坡度、坡向、溝道長(zhǎng)度、溝道深度、溝壑密度、縱比降等,并通過(guò)兩期TM影像提取出溝道寬度;gully density更多例句詞組短語(yǔ)短語(yǔ)density of gully 溝谷密度gully density更多詞組專業(yè)釋義農(nóng)業(yè)科學(xué)溝谷密度地球科學(xué)溝壑密度溝道密度