英语词汇negative elevation怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	negative elevation
释义	negative elevation 简明释义负迁移网络释义 1 ?负迁移 ... negative electrode 负极，阴极 negative elevation 负迁移 negative exponent 负指数 ... 双语例句 1 Negatively pressurized irrigation (NPI) method, a newly irrigation technology, in which the elevation of the emitters is higher than that of the water source, runs under negative hydraulic head. 负压灌溉法是一种新近提出的节水灌溉技术，灌溉时供水水头为“负值”，即灌溉水源高程低于灌水器高程。
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