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"initial" in Chinese : adj. 最初的，開始的；原始的；初期的，初發(fā)的。 th ...
"water" in Chinese : n. 1.水；雨水；露；〔常作 pl. 〕礦泉，溫泉； ...
"pressure" in Chinese : n. 1.壓；按；擠；榨。 2.【物理學】壓力，壓強；大 ...
"initial pore water pressure" in Chinese : 初始孔隙水壓力
"initial pressure" in Chinese : 初始壓力; 起初壓力; 起始壓力; 原始壓力
"effective initial pressure" in Chinese : 有效初壓力; 有效壓力
"initial absolute pressure" in Chinese : 絕對初壓力
"initial bottom-hole pressure" in Chinese : 原始井底壓力
"initial bottomhole flowing pressure" in Chinese : 初始井底流壓
"initial bubble-point pressure" in Chinese : 原始泡點壓力
"initial collapse pressure" in Chinese : 沉降起始壓力; 起始塌陷壓力; 土的物理性質(zhì)濕陷起始應(yīng)力
"initial field pressure" in Chinese : 原始油田壓力
"initial flowing pressure" in Chinese : 初流壓; 初始流壓
"initial formation pressure" in Chinese : 原始地層壓力
"initial hydrostatic pressure" in Chinese : 起始靜液壓力

( 4 ) through the hydraulic property experiment of micro - hole lateral pipes of simple sdi in air , it was found that the average pressure of 60 mitre length lateral pipes was at the position of per 40o / o ~ ~ ~ 50 % of the effectual pipe length from the fist micro - hole , major pressure - loss was occurred at the ahead part of half pipe . the pressure uniformity reduced with orifice aperture ? increasing , and the relationship between pressure uniformity and initial water pressure was poor . running under the initial water pressure of 1 . 5 meter , the discharge uniformity reduced with orifice aperture ? increasing , and when the orifice aperture smaller than or equal 1 . 0mm , irrigation uniformity could achieve above 0 . 6
（ 3 ）通過對空氣介質(zhì)中簡易地下滴灌的微孔毛管試驗研究發(fā)現(xiàn)： 60m管長的毛管平均壓力水頭的位置基本上在距第一孔口的有效管長40 - 45的地方；大部分水頭損失發(fā)生在毛管的前半部分；壓力均勻度隨孔徑的增大而減小，但與初始工作水頭關(guān)系不密切；在1 . 5m以下的工作壓力下運行，沿程出流均勻度隨孔徑的增大而降低，當孔徑不大于1 . 0mm時，灌水均勻度可以達到60以上；當孔徑大于等于1 . 2mm時，灌水均勻度低于50 。