1) the method of negative hydrodynamic gradient
负水头法
2) negative hydraulic head
负水头
1.
Characteristics of horizontal one-dimensional soil water infiltration under negative hydraulic head;
负水头条件下的水平一维土壤吸渗特征
2.
One-dimensional soil water infiltration under water supply of negative hydraulic heads;
负水头供水条件下土壤水分一维入渗规律的研究
3) negative suction head
负吸水头，负压头
4) negative pressure irrigation
负水头灌溉
1.
Based on the principle of negative pressure,the negative pressure water supplying,controlling pot device and negative pressure irrigation system de- signed for solve this problem,the experiment result showed that the negative pressure water supplying,controlling po.
基于负压控制原理研制出的负水头供水控水盆栽装置和负水头灌溉系统解决了这一难题,试验证明负水头供水控水盆栽装置可将土壤含水量持续维持在理想状态。
5) negative artesian head
负承压水头
6) negative pressure irrigation technique
负水头灌溉技术
补充资料：负负
1.犹言惭愧﹑惭愧;对不起﹑对不起。
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参考词条