負浮力 的英文怎麼說

中文拼音 [fùfúlì]
負浮力 英文
negative buoyance
  • 負 : Ⅰ名詞1 （負擔） burden; load 2 （虧損） loss 3 （失敗） defeat Ⅱ動詞1 [書面語] （背） carry on th...
  • 浮 : Ⅰ動詞1 （漂在液體表面） float; drift 2 [方言] （在水裡游） swim Ⅱ形容詞1 （在表面上的） superfici...
  • 力 : Ⅰ名1 （力量; 能力） power; strength; ability; capacity 2 [物理學] （改變物體運動狀態的作用） forc...
  • 浮力 : [流] buoyancy; buoyant force; buoyance; floatage; rising force; buoyancy force浮力參數 [流] buoya...
  1. The mechanism of the downburst formation was also investigated based on the cloud microphysics of the simulated storm and it was found that this downburst was primarily produced by hail loading, and enhanced by hail melting and rain evaporation. and the loading and the melting of hail played a very important role in producing the downburst. the gale at the surface was caused by the severe downburst

    從雲微物理學角度分析了此次局地性大風的形成原因，認為由高空冰雹粒子的拖曳產生的負浮力作用是促發強下沉氣流產生的主要原因，其次是冰雹的融化和雨水蒸發冷卻對下沉氣流起加速作用，冰雹的拖曳和融化作用對下沉氣流具有決定性的作用。
  2. People who cannot swim may do aerobic exercises in the water to burn calories and produce a better physique. besides, swimming also helps to strengthen the cardiopulmonary functions, rectify body posture, and prevent or treat pain in the shoulders and the lumbar region of the back. swimming is also good for unwinding, while the buoyancy of water can minimize pressure on the joints

    不會游泳的旱鴨子都可以從事水中有氧的健康運動，它有燃燒熱量健身健美的效果，除此之外，也能強化心肺功能，又對身體姿勢的矯正及肩膀腰部的疼痛，都有預防與療效，游泳也有舒解壓力的功能，水的浮力又會減少身體關節所負的壓力。
  3. Qarticipants can experiedce the gravity - free feeling brought by the neutral buoyancy, hear the beautiful sound of the air bubbles from their own breathing, see all kinds of fancy corals and swim side by side with the tropical fishes in various colors

    參加該活動的遊客可親身體驗到海底的中性浮力所帶來的無負重的感覺，聆聽到自己呼出氣泡的悅耳響聲，觀賞到海底種種奇特的珊瑚和五彩斑斕的熱帶魚。
  4. The authour investigate the dosing conditions and effect of the pac to the huanghe water - source, which includes the following four parts : the selection of the pac ; the confirmation of dosing scheme and effect of the pac ; the research of application of potassium permanganate in combination with pac ; the research of the pac ' s modification and the modified effectiveness. the experiment is mainly carried out on the pilot system in the jieyuan water plan of tianjin. the results of the reseach include the following : l ) the pac from zunhua plant is selected as the better carbon for the source water of tianjin through the experiment ; 2 ) through the pilot experiment we conclude that the pac ' s best adding point is the mixing tank and the better dose is 10mg / l, on which the codmn of filtered water can be decreased to 40 % and the effluent have no problem of odour and color ; 3the adsorbing experiment show that pac mainly adsorb the organic matters which molecular wt., distribution between 500 and 3000, and can adsorb organic matters whose molecular wt., distribution are bigger than 6000 if the dose of it is adequent ; 4 ) pac together with potassium permanganate can remove the organic matter more effectively than each of them alone, and reduce the rising trend of turbidity of the flotation ' s effluent due to adding pac ; 5 ) the thesis made a research on the surface properties and the adsorbing capability of the modified carbon by oxidizer : the modified carbon with 20 % h2o2 can remove more organic pollutants than the untreated one by 12 % when we add a higher dose of coagulant ; 6 ) the modification of reduction and loading metal ions are also sttldied, and drow the following conclusions : the modified carbon with 5 % ammonia can enhance the organic matter ' s removal effectiveness by 10 % to the tianjin source water than the untreated one, and the modified one with loading metal ion remove the organic matters from the tianjin source water better ( 8 % ) than the untreated one due to the strong affinity betwween the humic acid and copper ion

    本文的實驗主要是在天津芥園水廠的中試系統上完成的，論文的成果和結論主要包括： 1 ）通過靜態實驗選定河北遵化活性炭廠生產的煤質炭為適合天津原水的炭種； 2 ）中試實驗確定粉末活性炭的較佳投加點為混合池投加，較佳投加量為10mg l ，此時可使濾后水的cod _ （ mn ）降低40 ，且可較好地控制濾后水的嗅味和色度； 3 ）初步確定粉末活性炭對原水中有機物的吸附主要集中在分子量在500 - 3000范圍內，投量增大時可吸附部分分子量大於6000的有機物4 ）中試實驗表明：粉末活性炭與高錳酸鉀聯用可取得較兩者單獨應用時對有機物更好的去除效果，且對因投加粉末活性炭而造成的氣浮出水濁度升高有一定的改善作用； 5 ）研究並初步確定氧化改性對粉末活性炭表面性質和有機物的去除效果的影響：粉末活性炭的氧化改性會使其表面的酸性官能團大量增強，表面極性增加；經20的過氧化氫改性的活性炭在增大混凝劑投加量（ fecl _ 3投量為15mg l ）時對有機物的總體去除效果較原活性炭提高12 ， 1次氯酸鈉改性活性炭對有機物的去除效果較原活性炭提高6 ； 6 ）研究並初步確定還原改性、負載金屬離子對原水中有機物的去除效果的影響：經5氨水改性的活性炭可提高天津源水中有機物的去除率達到10 ；負載銅離子后的活性炭可提高對腐殖酸類物質的去除能力，一般可提高8左右。
  5. We succeeded in crossing hanjing river of zhong - wu gas pipeline project, dawen river of jining branch line of west - east gas pipeline using the technique of trenching in water, controlling negative buoyancy and bottom towing without water interception

    公司採用帶水大開挖成溝，控制負浮力，管道底拖法等施工工藝，在江河不斷流的前提下，成功完成了忠武輸氣管道襄樊支線漢江穿越、西氣東輸冀寧支線大汶河穿越等工程。
  6. Numerical results are obtained for velocity, temperature and concentration profiles, variations of both nusselt and sherwood numbers under different buoyancy ratio and inclination angles of = 15 - 90. at a given inclination angle, heat and mass transfer rates decrease with heat and mass buoyancies and the buoyancy ratio b decrease from high positive values, and then increase again with the buoyancy radio b further decreasing after the velocity and transfer rates reaching a minimum

    研究結果表明：傾斜角度一定，當熱浮力與物質擴散浮力共存且二浮力之比b從較高正值變化到較高負值時，流體速度和熱質傳遞速度從高逐漸變低並出現最小值，此後隨著向下浮力的增大，流體向下流動且隨| b |的增大而加速，熱質傳遞速率隨| b |的增大而重新增大。
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