dissolved oxygen 中文意思是什麼
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The model 625 analyser is designed to monitor the dissolved oxygen concentration in boiler feed-water and other aqueous solution.
625型分析儀用來監視鍋爐進水和其它水溶液中溶解氧的濃度。 -
The design of system determining and controlling dissolved oxygen of water in aquiculture
漁業養殖水中溶解氧的測控系統研製 -
L - effect of biodegradable waste on dissolved oxygen
溶氧生物分解廢物的l效應。 -
A novel circulatory system for on - line monitoring of dissolved oxygen that makes use of a fiber - optic chemical sensor is presented. an oxygen sensitive optode was combined with a membrane onto which was immobilized pyrenebutyric acid as a fluoroprobe, the membrane was composed of cellulose triacetate as a polymer and di - 2 - ethyl hexyl -
就用於水中溶解氧在線監測的光纖光譜儀的搭建傳感探頭的設計及傳感膜的製作進行了探索，並對傳感器的響應性能進行了考察。 -
Before the farms had mechanical pumps, by dawn each day the dissolved oxygen in the pond water would be so depleted that the milkfish might easily suffocate. the fish farmers slept in the shelters, and as soon as they heard the fish coming up to the surface and trying to breathe air, they immediately agitated the water to aerate it
早期養殖虱目魚，由於沒有機械幫浦，每到清晨，漁瘟水中的溶氧量已經非常稀薄，使得虱目魚容易因氧氣不足致死，此時住在桶間寮的漁民，聽到虱目魚因氧氣不足浮上水面呼吸的聲音，就會立刻為虱目魚注入氧氣。 -
The effort of manganese removal was studied and the kinetics of manganese removal was tried to establish. the factors of dissolved oxygen concentration, fe2 + concentration, ph, p concentration and closing of the filter were studied to evaluate their effort for biological manganese removal, and the correlation of residual manganese and oxidation - reduction potential was also discussed. as the iron content of water was high, experiment results showed that the reaction was zero order, as the iron content of water was low, the reaction was first order. the time needed for the cultivation of biological manganese removal was 60 70 days. the filter operated at the filtration rate of 8 10m / h, silica sand of effective size 0. 95 1. 25mm filled the filter to a depth of 1200mm
試驗結果表明，成熟后濾砂表面濾膜的x射線衍射圖譜與mno _ x ? 5h _ 2o （ x = 1 . 86 ）的x射線衍射圖譜一樣，濾膜成熟后的結構在進水物質不發生變化的情況下不發生變化;合適的碳磷比對生物除錳有明顯的促進作用，試驗條件下的投磷量不會對出水造成二次污染;生物除錳需要亞鐵的參與，亞鐵的存在除了能夠促進微生物分泌胞外酶並刺激其活性外，還通過鐵離子的變價傳遞電子，催化錳離子的氧化反應，從而促進對二價錳的降解。 -
Q. why are high dissolved oxygen levels better than air sparging or orc
為什麼高的溶解氧濃度比空氣噴射或orc更好？ -
The stratification is very obvious in the vertical profiles of chlorophyll and dissolved oxygen, with high content in the subsurface layer when thermocline exists
在溫躍層存在季節，黃海冷水團水域的葉綠素和溶解氧含量出現次表層最大值現象。 -
Fuzzy control of dissolved oxygen in fermentation process of xylitol
木糖醇發酵過程中溶解氧的模糊控制 -
Research on the diurnal variation of dissolved oxygen in natural pond and its correlative factors
襄陽護城河水體中溶解氧含量研究 -
Standard guide for collection of water temperature, dissolved - oxygen concentrations, specific electrical conductance, and ph data from open channels
從明渠中採集水溫溶解氧濃度具體電導性和ph值的標準指南 -
This paper introduces the development process of wastewater disposal, it ' s auto control system, the level of nowadays and several new techniques of china and foreign countries. the immanent structure, control rules, main features and design methods of auto control systems in wastewater disposal process are studied in this paper. aiming at four typical parameters, such as temperature, dissolved oxygen, ph and the planes of water, the distributed control system is designed, composed by pc called epigyny computer and scm 8098 called hypogyny computer, and some sensors, shift deliver utensils and related meet orifices of parameters gathering and figures communication
本文介紹了國內外污水處理及其自動控制系統的發展過程、當今水平和提高自動化程度的若干新技術；研究了污水處理自動控制系統的內在結構、控制規律、主要特點和設計方法；選取污水處理中的典型參數溫度、溶解氧、 ph值和液位等為控制對象，設計了以個人計算機為上位機、以8098單片機為下位機，並輔之以傳感器、變送器及相關介面單元所構成的二級集散控制系統（ dcs ） ；介紹了幾個主要程序模塊的設計思路、工作過程，這些程序模塊是：用高級語言visualbasic6 . 0開發的上位機人機交互界面程序、數據處理和圖表輸出程序，用執行效率高的匯編語言開發的下位機數據採集與系統監控程序、上位機與下位機之間的數據通信程序，匯編語言與vb之間的轉接程序，等等。 -
This sensor has higher sensitivity and excellent stability, in the detection of gas oxygen and dissolved oxygen, the response time were 5. 57s and 14. 625s
實驗結果證明，測定膽固醇用的熒光式光纖生物傳感裝置具有較高的靈敏性和優良的穩定性，其測定氣體氧和溶解氧的響應時間分別為5 . 57s和14 . 125s 。 -
In this dissertation, the characteristic of this sensor in determination for gas oxygen and dissolved oxygen was studied, thereafter, the testing of cholesterol solution and plasma also was developed in experiment and obtained ideal result
研究了裝置測定氣體氧和溶解氧時的特性並應用於膽固醇溶液和血漿中膽固醇含量的測試，獲得了理想的結果。 -
It indicated that not only can spirulina cells grow photoautotrophically and photomixtrotrophically, but also can grow heterotrophically under some specific conditions. light intensity, light quality, temperature, species and concentration of metals, rare earth elements and vitamins, salinity, cell concentration, dissolved oxygen level and magnetic filed etc., all play important roles in photosynthetic performance and cell productivity of spirutina
認為螺旋藻細胞不但能進行光合自養和混合營養生長，而且在某些特定的環境條件下，還能進行異養生長；光照強度、光質、溫度、金屬元素、稀土元素、鹽度、藻體細胞濃度、溶氧水平、維生素、激素和磁場等環境因素對螺旋藻細胞的光合性能和細胞產率都有顯著影響。 -
Water quality - determination of dissolved oxygen - iodometric method
水質溶解氧的測定碘量法 -
With stable and reliable operation, compact structure, and strong air breathing ability, it enables to enhance the stocking density for fish and prawn, flow water by stir to increase the dissolved oxygen concentration in water, and make even water temperature to improve water quality, which is an idle equipment for high - yielding aquaculture
具有工作平穩，運行可靠，結構緊湊，充氣能力強，提高魚蝦放養密度，攪拌水體流動，增加水中溶氧含量，能使水溫均勻達到改善水質的目的，是實現高產養殖的理想設備。 -
Also, the author ’ s design strategy and creativity has been given in this paper. specifically, it includes : based on the feasibility analysis of the fit selection of control parameters in the aeration process, the aeration process of wastewater treatment of the joint - constructional complete - mixed activated sludge process has been aimed at in this paper. then, the state equations of the aeration process have been proposed in this paper, which is on the base of dissolved oxygen concentration ( do ) and discharge quantity of sludge ( qw ) as control variables, the concentration of bod and sludge as state variables. based on the present study on optimization control of wastewater treatment, the multivariable optimal control model with restriction factor has been presented in the paper with introducing modern control theory and system analysis into the field of activated sludge wastewater treatment,
具體包括:以完全混合、表面曝氣合建式活性污泥工藝的污水處理曝氣過程為研究對象，在闡述了曝氣過程式控制制參數選取可行性的基礎上，建立了以溶解氧濃度do和活性污泥排放量qw為控制變量，以曝氣池中有機物濃度s和微生物濃度x為狀態變量的活性污泥曝氣過程的基本狀態方程;運用現代控制理論的觀點和污水處理理論，在現有關于污水處理最優控制問題研究的基礎上，建立了有約束條件多變量能耗最小數學模型，該數學模型是以有機物排放總量和狀態變量的末值條件作為約束條件，曝氣過程的能耗最小作為目標泛函;採用增廣拉格朗日乘子法對最優控制問題進行轉化，並對應用極大值原理求解能耗最小這一最優控制問題進行了詳細的解析;引入約束運算元，應用具有控制約束的共軛梯度演算法對能耗最小這一最優控制問題進行求解，並進行模擬實驗驗證。 -
Advantage is taken of the reducibility of oxygen in the polarographic determination of dissolved oxygen.
在極譜測定溶解氧，則利用了氧還原性這個優點。 -
The central waters have faced some real challenges in the past. wastewater from both sides of the harbour was discharged into it after just simple screening, leading to marine water low in dissolved oxygen and high in organic nutrients and sewage bacteria
中部水域曾面對不少嚴峻問題，長期以來維港兩岸所產生的廢水只經過簡單過濾程序便排入港內，導致海水溶解氧含量下降，有機營養物和細菌水平上升。
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