density water 中文意思是什麼

density water 解釋
水91
  • density : n. 1. 稠密；濃厚。2. 【物理學】濃度；密度；比重。3. 愚鈍，昏庸。
  • water : n 1 水；雨水；露；〈常作 pl 〉 礦泉，溫泉；藥水。2 〈常 pl 〉水體；水域；水道；海；湖；河；海域；...
  1. 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 。
  2. Mercury has a much greater density than water.

    水銀的密度比水大得多。
  3. Density currents generated by saline and fresh water interactions are also important in the transport of sediment in estuaries.

    由鹽水和淡水相互作用所產生的異重流，在河口泥沙輸移中也是很重要的。
  4. In conclusion, the variable degree of the soil water properties and bulk density in different layers is water content > wilting point > field capacity > saturation > bulk density

    總的來看，各水分特性在剖面各層的變異情況為:含水量>萎蔫含水量>田間持水量>飽和含水量>容重。
  5. The coefficient of variation of saturated water content decreased with the depth of profile. the coefficient of variation of bulk density and field capacity fluctuate with depth of soil

    飽和含水量的變異系數都隨深度的增加逐漸降低，含水量、容重和田悶持水量的變異系數隨深度的呈波動變化。
  6. In this paper, the effects of fly ash, cement, lime, fine sands, foam agent, w / c ratio and additional agent on foamed concrete were studied by experiments, the best combination ratio of fly ash foamed concrete whose density varies from 551kg / m3 to 650kg / m3 was obtained through orthogonal test design, the foam agent quantity and the fly ash quantity effect the fly ash foamed concrete greatly, so the author selected them as independents to establish duality linear regression equations, the equations were quite ideal through the test of model summary r. moreover, the author also did some experiments about the water resistance of magnesium oxychloride cement fly ash foamed concrete, the outcome showed that phosphoric acid has good effect on water resistance, and its appropriate quantity was found

    本文通過試驗研究了粉煤灰、水泥、石灰、細砂、發泡液、水灰比及外加劑對粉煤灰發泡混凝土性能的影響，採用正交設計試驗方法得出了600級粉煤灰發泡混凝土的最佳配合比，同時發現發泡液和粉煤灰摻量對發泡混凝土的影響最為顯著，因此，以二者為自變量建立了二元線性回歸方程，通過全相關系數的檢驗發現方程較為理想。此外，還對氯氧鎂水泥基粉煤灰發泡混凝土的耐水性進行了相關實驗，發現磷酸有較好的耐水性效果，同時找到了其合適的摻量范圍。
  7. Cigarette tip and fire resistant high - density water and fire resistance

    防煙蒂和火/耐火層高密度/表面水火不侵
  8. On the basis of analyzing factor ( soil particle composition, soil bulk density, water stable aggregate content, antecedent soil moisture, slope gradient, rain intensity, accumulation depth and soil crust, soil and water conservation tillage measures ) affecting soil infiltration rates, several relation models was obtained ; analyzed in detail different soil and water conservation tillage measures intensifying infiltration rates, while there have the same rainfall condition, the increasing infiltration rates of contour tillage and artificial digging and artificial hoeing in gully areas of loess plateau are 67 % and 41 % and 29 % ; the increasing infiltration rates in hilly areas of loess plateau is 45 % and 22 % and 14 %

    在相同的降雨條件下，黃土高原溝壑區等高耕作與直線坡相比，可提高入滲67 ，人工掏挖可提高入滲41 ，人工鋤耕可提高入滲29 ；黃土丘陵溝壑區等高耕作可提高入滲45 ，人工掏挖可提高入滲22 ，人工鋤耕可提高入滲14 。並根據黃土高原超滲產流的概念和水量平衡方程，建立了不同水土保持耕作措施強化入滲速率模型。
  9. The proper cultivation measures to reduce the quantity of the pathogen include sowing on suitable date, reasonable density, water quantity and fertilizer combination and avoiding highly susceptible cultivars, etc

    適期播種、合理密植、視墑灌水、配方施肥、培育小麥壯苗及避免種植高感品種等均能減輕小麥秋苗帶菌量。
  10. Question 31 : can the present situation of hongqiao comprehensive communication hub such as population roads, construction density, water body / water conservancy, sewage system, rain water system, urban communications system, cultural relic protection, water, electricity and gas supply involved in 《 soliciting documents 》

    可否給出《徵集文件》中涉及的虹橋綜合交通樞紐的現狀情況，諸如人口、道路、建築密度、水體/水利，污水系統、雨水系統、城市通信系統、文物保護、水電煤氣等等？
  11. Test method for dry and wet bulk density, water absorption and apparent porosity of thin sections of glass - fiber reinforced concrete

    玻璃纖維增強混凝土薄片的乾和濕體密度吸水率和表觀孔隙率的試驗方法
  12. Its density, water adsorption, coefficient of heat conducting and the coefficient of steam pervasion are all lower than those of other board heat preservasion materials

    其密度、吸水率、導熱系數及蒸汽透系數等方面均低於其它類型的板狀保溫材料。
  13. Insulating and sheathing materials of electric cables. common test methods. part 1 : general application. section 3 : methods for determining the density. water absorption tests. shrinkage test

    電纜絕緣和護套材料.通用試驗方法.第1部分:一般應用.第3節:密度測定方法.吸水試驗.收縮試驗
  14. Common test methods for insulating and sheathing materials of electric and optical cables - part 1 - 3 : general application ; methods for determining the density ; water absorption tests ; shrinkage test

    電纜和光纜的絕緣和護套材料通用試驗方法.第1 - 3部分:一般應用.密度測定方法.吸水試驗.收縮試驗
  15. Insulating and sheathing materials of electric and optical cables - common test methods - part 1 - 3 : general application - methods for determining the density - water absorption tests - shrinkage test

    電纜和光纜絕緣和護套材料.通用試驗方法.第1 - 3部分:一般應用.密度測定方法.吸水試驗.收縮試驗
  16. Common test methods for insulating and sheathing materials of electric cables. part 1 : methods for general application. section three : methods for determining the density - water absorption tests - shrinkage test

    電纜絕緣和護套材料通用試驗方法第1部分:通用試驗方法第3節:密度測定方法-吸水試驗-收縮試驗
  17. Common test methods for insulating and sheathing materials of electric and optical cables - part 1 - 3 : general application - methods for determining the density ; water absorption tests ; shrinkage test ; amendment 1

    電纜絕緣和護套材料通用試驗方法.第1 - 3部分:一般應用方法.密度測定方法.吸水試驗.收縮試驗.修改件1
  18. Common test methods for insulating and sheathing materials of electric and optical cables - part 1 - 3 : methods for general application - methods for determining the density - water absorption tests - shrinkage test

    電纜和光纜的絕緣和鎧裝材料的通用試驗方法.第1 - 3部分:一般應用方法.密度測定方法.吸水試驗.收縮試驗
  19. Insulating and sheathing materials of electric cables - common test methods - general application - methods for determining the density - water absorption tests - shrinkage test - section 3 : methods for determining the density - water absorption tests - shrinking test

    電纜絕緣和護套材料.通用試驗方法.一般應用.密度測定方法.吸水試驗.收縮試驗
  20. Test methods for the properties of glass fibre reinforced cement. the volume density, water content and glass fibre content

    玻璃纖維增強水泥性能試驗方法體積密度含水率和玻璃纖維含量
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