The experimental results showed that in the condition of this experiment four algaecides all had strong removing rate on algae, and their removing rate increased with dose increasing, and decreased with algae density increasing. according to the removing rate on algae and cost value or so, the sequence of four algaecides from good to bad were potassium permanganate, copper sulfate, hydrogen peroxide and sodium hypochlorite. in the condition of this experiment, the suitable dose of potassium permanganate was 0. 8mg / l, the algal removing rate was beyond 90 % and the cost of this algaecide was only 0. 0068 / m3. the efficiency of algae removal by four algaecides for huanghe river water was studied. the results showed that the majority of huanghe river water was bacillaroiphyta, and the dominant genera was melosira, which reached 78 % ~ 94 %
結果表明,在實驗條件下,四種殺藻劑均具有一定的殺藻效果,藻類去除率均隨藥劑投量的增加而提高;原水藻類
數量影響殺藻劑殺藻效果,四種殺藻劑的藻類去除率均隨原水藻類
數量的增加而降低;通過殺藻效果、經濟性以及安全性等方面的綜合比較,對于以有毒藍藻為優勢藻屬的引灤水,四種殺藻劑的優劣程度從優到劣
排序為:高錳酸鉀硫酸銅過氧化氫次氯酸鈉;在實驗條件下,高錳酸鉀適宜投加量為0 . 8mg l ,藻類去除率高於90 ,所需的藥劑費用僅為0 . 0068元m ~ 3 。
Through the research that managed for jet spraying mechanism, with vacuum and negative pressure effect of jet, the inhale row mathematics model of spurted lampblack is established
摘要通過對射流噴射機理的研究,利用「噴射」的真空負壓效應,建立了油煙噴射吸
排數學模型。
The work was accomplished with much manpower and many transportation vehicles, as well as limitless stamina and perseverance on the part of the initiates. the five tiers of the lecture platform were decorated with many green, leafy trees and plants bearing flowers of resplendent colors. some of the trees were so big and tall that they required a lifting machine and half a dozen strong initiates to place them on the stage
例如:講經臺之布置是由眾多翠綠的樹木鮮麗的花草所組成,光是一棵大樹,就須用堆高機和五六位男眾合力將其抬上講經臺臺上五大層階梯布置滿滿的彩色花卉及上千盆植栽還有場內幾千個加放的椅子的安
排數百位接待人員合唱團表演人員的定位綵
排等等,都是極為浩大的工程!
The studied factors respectively are : length of soil nailing, insert deepness of piles, friction force of soil nailing interface, declination angle of soil nailing, horizontal spacing of soil nailing, rows of soil nailing, unit weight of soil, friction angle, unit cohesion, overload of slope, diameter of soil nailing
這11個因素分別為:土釘(錨管)長度、土釘直徑、土釘界面摩擦力、土釘下傾角、土釘水平間距、土釘
排數、土體重度、內摩擦角、粘聚力、坡頂超載、板樁插入深度。
The setting up on gun position uses double row showing, and up row is the direction of fire and angle of fire that terminal set has provided, down row is the angle that coder on the undercarriage has measured when gun layer attached to the trunnions while operating, when double row data consistent, stop operation and finish supervise and control
在炮位上的設置採用雙
排顯示,上
排即為終端機提供的射角和射向,下
排則為瞄準手操作過程中固定於耳軸、下架基軸部位的編碼器所測得的獲得角。當兩
排數據一致時停止操作,完成監控。
Automatic computation and modification of the dimension, the number of total heat tubes and rows, the body line of layout areas and other results involved. 4. the programming of various functional models and their communication, coded with visual lisp and vba and based on the opening structure of autocad and its entity database
標示最大布管邊界,自動標注尺寸,自動修改並輸出布管參
數及結果,包括:自動計算並輸出每一管程的管根
數、起始
排數、終止
排數,自動計算並輸出每
排熱管根
數與拉桿根
數。
River a row of dozens of strains of diethanolamine trees, the leaves may burn like red, is august day
江畔一
排數十株烏柏樹,葉子似火燒般紅,正是八月天時。
Notes on two identities of derangements
關于錯
排數的兩個等式的注記
Control output : relay contact ac250v 7a impedance control meaus : 2 - on off control
Xmt - 3000單
排數顯溫度控制儀
Intelligence double - row display temperature regulating instrument digital faceplate meter
Xmt9000智能雙
排數顯pid儀表
Xmt3000 intelligence temperature regulating instrument name : xmts - 3000 digital temperature control meter
名稱: xmtf - 3000單
排數顯溫度控制儀
Total range of the input control output : relay contact ac250v 7a impedance control meaus : 2 - on off control power : ac85 to 220v 50 60hz
Xmts - 3000單
排數顯溫度控制儀xmts - 3000單
排數顯溫度控制儀
Basic error : 0. 5a dot of the total range of the input control output : relay contact ac250v 7a impedance control meaus : 2 - on off control power : ac85 to 220v 50 60hz
Xmtd - 3000單
排數顯溫度控制儀xmtd - 3000單
排數顯溫度控制儀
For the optimization function of hrsg, the cool costs is considered as the objective function and the variables are the number of row, the number of tube per row, the horizontal distance and vertical distance between tubes of the evaporator and the economizer
建立了以bchp系統的冷量成本為目標函
數,以余熱鍋爐
排煙溫度、蒸發器和省煤器中螺旋翅片管管
排數、每
排管
數、管束橫向節距和管束縱向節距為決策變量的余熱鍋爐優化模型。
The article below deals with the mechanism research of this kind of machine, describing the structure and principle ; theoretically analyzing the data to derive formula ; tentatively proposing theory of radial flow between parallel plates for future design ; pores arrangement, i. e., longitudinal pores are equally spaced, horizontal pores bore size is preferred unequal and rows distance can be either equal or not but generally smaller than pores distance, and rows shall be odd numbers and are arranged symmetrical from the center row and bore size reduces gradually from the center row
本文對氣墊機作了機理研究,描述了氣墊機的結構型式及工作原理,對氣墊機的主參
數作了理論分析,根據平行平板間的徑向流動理論,建立了計算模型,導出了計算公式,可作為氣墊設計理論的依據;提出了氣孔布置的原則:縱向孔間距相等較好,橫向孔徑不等為佳,橫向孔
排距可以相等,也可以不相等,但一般小於孔間距。氣孔
排數應為奇
數,由中心兩側呈對稱布置,孔徑由中心向兩旁逐漸減小。
Quantity : quantity, unle otherwise arranged, shall be subject to a variation of 5 % plus or minus at sellers ' option
數量:除非另作安
排,
數量可能由賣方選擇作加或減5的變動。
Quantity : quantity, unless otherwise arranged, shall be subject to a variation of 5 % plus or minus at sellers ' option
數量:除非另作安排,數量可能由賣方選擇作加或減5的變動。