low-water channel 中文意思是什麼
low-water channel
解釋
低水河槽-
At first, this paper analyzes the factors of water - sand influencing water level of yellow river and the feasibility just using the factors of water - sand to study water level, and collects the corresponding data ; secondly, because there are strong nonlinear relation in the corresponding data, by meticulous theory analysis, this paper integrates basic nonlinear analysis method, theory of random analysis, method of least squares and so on. it puts forward a method which can get the high accuracy simulation of the data, perfects the multi - factor analysis of variable ( over three factors ) of the statistic ; thirdly, it applies the method to the approximation of corresponding water level process which belong to the capacity of sand of middle - high and middle - low, and get the high - accuracy simulation about the typical nonlinear relation ; at last, this paper definitudes the main influence mode that the capacity of sand. it mainly unite with other factors to work on the water level in the yellow river lower reaches ; mor eover, this paper analyzes the difficult point and the direction of improvement to realize the accuracy forecasting of the flood level of erodible - bed channel
首先，系統分析了影響黃河水位的水沙因素，及僅用水沙因素有效研究水位的可行性，並按變量對應思想採集它們的相應數據；其次，由於相應水位過程數據中含極強的非線性關系，本論文經細致的理論分析，將基本的非線性分析方法、統計建模方法、隨機分析理論、最小均方誤差原則等等數學理論及方法有機揉合，提出了能有效實現這類數據高精度擬合的分層篩選法，並改進了統計學中多因子（三個以上）方差分析法；再次，將這一方法用於黃河中高及中低含沙類洪水相應水位過程的擬合，實現了這一典型非線性關系的高精度擬合，各年汛期上下游相應洪水位過程的擬合誤差都較小；最後，明確黃河下游含沙量對水位的主要影響方式，即含沙量主要是與其它因素聯合對水位作用；另外分析了要實現變動河床洪水位過程準確預報的困難所在及改進方向。 -
Investigation of a low prepulse multi - channel self - breaking water switch
低預脈沖水介質多通道自擊穿開關實驗研究 -
For the low water head water control project at a branching channel, its flood discharge capacity is related not only with the total discharge width but also with the discharge width ratio of the two branches
摘要位於分汊河段的低水頭樞紐，其泄洪能力不僅與樞紐的總泄流寬度有關，而且與兩汊泄流寬度之比有關。 -
We fixed up a short forked stick to hang the old lantern on, because we must always light the lantern whenever we see a steamboat coming down - stream, to keep from getting run over ; but we wouldn t have to light it for up - stream boats unless we see we was in what they call a " crossing " ; for the river was pretty high yet, very low banks being still a little under water ; so up - bound boats didn t always run the channel, but hunted easy water
我們豎起一根矮樹杈子，把那盞舊的燈掛了上去，因為每當有輪船往下游開來，我們必須點亮這盞燈，防止它把我們撞翻。不過，有上水的輪船開來，我們不用點燈，除非我們發現自己漂到了人家所說的「橫水道」上，因為河水還漲得很高，很低的河岸還有一小部分淹沒在水下，因此上水的船往往不闖這個水道，而尋找流得慢一些的水道走。 -
The main cause of signal ' s decrease in infrared channel of spacecraft flying remote sensing instrumentation is water vapor deposition on the surface of low temperature optical instruments which released from materials
摘要空間遙感儀器紅外通道的信號衰減，人軌初期的主要原因是由於材料釋放的水汽在低溫光學窗口表面沉積，導致紅外透射率降低所致。 -
A new method for realization of multi - channel data acquisition on windows flat form is brought forward in allusion to the feature of hyper - low frequency with water pressure pulsation in hydroelectric sets. and various anti - disturbance solutions are adopted in connection with the detection environment. the device proved to be able to has been meet predetermined requirement by its engineering application
針對水力發電機組水壓脈動超低頻特性，開發出一種在windows平臺上實時多通道數據採集系統，並結合測試現場環境，提出了抗干擾的各種措施.經實際運用，達到了預定要求 -
After simulating the model of water hydraulic valves, the velocity distribution, pressure distribution, energy distribution can be obtained and relations between the valve channel and the energy loss, the negative pressure distribution can be analyzed, which offers the theory foundation for designing water hydraulic valves with the high efficiency, low energy loss and low noise
通過對水壓閥模型的cfd穩態和瞬態解析，可以得到水壓閥內流場的速度分佈、壓力分佈及能量分佈，據此定性分析流道結構（速度、壓力、流動的分離與再附壁，旋渦的產生與消失等）與能量損失、負壓分佈等的關系，從而為設計出高效率、低能耗、低噪聲的水壓閥提供理論依據。 -
In this paper, the spatial structure of the low - speed streaks and particle motion in the near wall region of turbulent open channel flow were observed on the side and bottom of a water flume, respectively, using flow visualization and image processing techniques
本文以試驗研究為主要手段，採用流動顯示和圖像處理技術，從水槽底部和側面兩個方向測量，分別對明槽紊流近壁區的帶狀結構及顆粒運動特性進行了系統的試驗研究。
分享友人