The groin-front flow field of this groin type is similar to that of repelling groins, and the largest scour pit normally occurs upstream of the groin head (see Fig. 6).是什么意思_The groin-front flow field of this groin type is similar to that of repelling groins, and the largest scour pit normally occurs upstream of the groin head (see Fig. 6).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句