lowest water level 中文意思是什麼
lowest water level
解釋
最低水位-
Water system. lowest level valve for water accumulator
水系統.泵站用最低液面閥pn 20mpa -
In regulation works of mountainous channel, determination of designed lowest navigable water level of reach with fluctuating backwater area is a common problem
摘要變動回水區河段設計最低通航水位確定是目前山區航道整治工程中經常遇到的問題。 -
Taking the reach with fluctuating backwater area in jiaokou hydroplant in xiujiang river, guanxi zhuang autonomous region for instance, this paper analyzes the water - sediment characteristics of the fluctuating backwater area, calculates the design level of this reach with samples of level and discharge, etc., and propounds the determination method for the designed lowest navigable level of reach with fluctuating backwater area
以廣西繡江交口電站的變動回水區河段為例，分析了變動回水區的水沙特性，分別利用水位、流量樣本及不同方法計算與分析本河段的設計水位，提出了變動回水區河段設計最低通航水位的確定方法。 -
In ported trials, wu gave the minimum tr of all plants, and its diurnal maximum tr persisted stability the most within the range of soil moisture 20. 4 % - 6. 4 %. ; nx lowered its tr and shrank its high - low lines after had experienced irregular wet - drought hardening period during culturing ; kerqin performed a plasticity as compared to field ; c. lanata also stood the most stability but on the basis of middle - high maximum tr level ; tr by caragana korshinski was high when soil water was abundant, but was lowest for lack of water ( 6. 4 % )
盆栽試驗表明，華北駝絨藜蒸騰最弱，且在土壤含水量20 . 4 6 . 4的范圍內最高蒸騰速率穩定性最強；經脅迫鍛煉寧夏駝絨藜蒸騰降低，變幅減小；科爾沁駝絨藜與大田相比蒸騰可塑性較強；土壤水分變化中，北美駝絨藜蒸騰在中高水平上維持穩定的能力最強；水分良好時檸條蒸騰很強，水分脅迫中蒸騰極大降低。 -
Water system. core of lowest level valve for water accumulator
水系統.泵站用最低液面閥芯pn 20 31 . 5mpa -
The distance of pumps in water factory is designed in the light of the lowest river level for the purpose of the best distance
沿長江、漢水流域一帶，城鎮供水廠取水水泵機組為了保證在沽水期低水位時，水泵機組的出水揚程。 -
2. based on the analysis of the historical evolution of jinan springs ' spurting, a quantity equation between the anaual average spring discharge and the anaual lowest water table is built according to the statistic data, which enable us to gain the corresponding relation between baseline water level and the smallest scenic discharge of spring gushing. then the groundwater discharge in the spring area is calculated and the controlling parameter of maximum available amount of groundwater exploiting is obtained
泉域總面積1486平方公里。 （二）通過分析濟南市泉群噴涌歷史統計資料，首先建立泉群年平均噴涌量與年最低地下水位之間的定量方程，得出四大泉群噴涌的底限水位與最低景觀流量的對應關系，然後，計算泉域內地下水的入滲補給量，再得出保證泉涌的地下水最大允許開采量的控制性參數。 -
This comes at a time when world grain stocks are at their lowest level in 30 years and when u. s. farmers are losing irrigation water to aquifer depletion and to cities
這種大規模的采購適逢世界糧食儲備正處於30年來的最低水平，以及美國的農民由於蓄水層枯竭和城市用水正在失去他們的灌溉用水。 -
The month average and the year average water vapor press in chongqing both show that : the water vapor press decreases with the increasing of sea level elevation ; the water vapor press values in north - west and middle hill areas are middle and high ; the water vapor press values in north - east and south - east mountain areas are relatively low. the sea level elevation in north - east and south - east mountain areas of chongqing is higher, especially the north - east mountains are more rugged than the north - west mountains, and the decreasing of water vapor press with the increasing of sea level elevation is more distinct, so the lowest value often appears in the north - east mountains not in the north - west mountains. the seasonal change of water vapor press in chongqing is also distinct : the values of water vapor press are low mostly in winter, and the high values are relatively less ; the values of water vapor press are middle and high mostly in summer, and the low values are relatively less, the values in spring and autumn are between them
重慶市全年各月月平均和年平均水汽壓都表現出：隨著海拔高度的增加，水汽壓逐漸減小；西北部和中部的丘陵低山地區一般為水汽壓的中高值區；東北部與東南部的山地地區的水汽壓則相對較小重慶市東北東南山地地區海拔高度較高，尤其是東北山區的山地較東南山區的起伏更大，水汽壓隨海拔高度的減小更加明顯，因此各月的最小值往往出現在東北山區而非東南山區重慶市水汽壓的季節變化也很明顯：冬季水汽壓多為小值，大值較少；而夏季多為中、大值，小值較少；春秋季則介於兩者之間。
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