barriers是什么意思

用法例句

Characteristics of water and soil loss occurrence under contour hedges condition in red soil slope fields;

等高植物篱笆条件下红壤坡耕地水土流失的发生特征

Water and soil conservation effects and mechanism of contour hedges were studied in red soil region under simulated rainfall.

结果表明 ,与大豆单作相比 ,黄花菜和百喜草植物篱笆径流量、侵蚀量分别减少了 4 。