The modified porous riverbed model was constructed of gravel and bionic filler;and the other porous riverbed model constructed of macadam was tested as a contrast.是什么意思_The modified porous riverbed model was constructed of gravel and bionic filler;and the other porous riverbed model constructed of macadam was tested as a contrast.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句