n-contaminated surface water 氮污染地表水
n surface water
N地表水
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Under base employ of the coated urea, the total N concentration of farm surface water was near the contract level, and the possibility via runoff was very little.
结果表明，包膜尿素在基施情况下，田面水总氮浓度始终接近对照水平，通过径流损失的可能性很小。
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