比降比 的英文怎麼說

中文拼音 [bǐjiàngbǐ]
比降比 英文
stream gradient ratio
  • 比 : Ⅰ動詞1 （比較; 較量高下、 長短、距離、好壞等） compare; compete; contrast; match; emulate 2 （比...
  • 降 : 降動詞1. （投降） surrender; capitulate 2. （降伏） subdue; vanquish; tame
  1. Then, six evaluation methods ( double ratio analysis evaluation method using regional rainfall tendency control for single cloud seeding operation case, regression analysis evaluation effects on the bases of regional correlation and developing tendency of rainfall, multiple regression analysis evaluation effects on the bases of regional developing tendency of rainfall, cluster - analysis - based floating control historical regression method with uniform precipitation and atmospheric precipitable water as meteorological covariates, cluster - analysis - based floating control historical regression method with uniform precipitation used as meteorological covariate, and float ing control historical regression method ) were compared and analyzed with the case of the cloud seeding operation on 5 april 2002 in henan province

    然後，以河南省2002年4月5日飛機增雨作業為個例，對作業區域趨勢對比雙比分析評估方案、區域趨勢相關回歸分析方案、區域趨勢多元回歸分析方案、以降水量為協變量的ca - fcm方法、以降水量和整層大氣可降水量為協變量的ca - fcm方法和fcm方法6種評價方案進行分析比較。
  2. So this article analyses deeply in the method of ensur ' my designing food rolume which is an important element to affect the " designimy height of bridge " it brings forward an " arverage optiminmy suiting line " method which is a bondage discommode series at the same time it puts forward a ensurmy principle for rough coefficient " and " fallimy flood proportion which are both suitable to heilongjiang province at last this article introduces the " three - days rainimy rolume " method

    本文立足於黑龍江省各種河流的洪水特點，結合以往工程實際，對影響跨河橋梁設計高度的主要因素? ?設計洪水流量及其相應洪水位的確定方法加以詳細分析。提出有約束不連序系列的加權優化適線法及適合於黑龍江省的河流粗糙系數和洪水比降的確定原則，並介紹了三日降雨量法。
  3. As a practical application, the safety situation of jiujiang dike under the 1998 pluvial condition of once a hundred years in yangtze river has been evaluated by the reliability method from the point view of the seepage stability in terms of probability analysis and two dimensional saturated seepage finite element analysis combining with the mechanism of seepage burst in jiujiang dike summarized in the thesis

    通過滲流有限元和滲流可靠性分析論證了1998長江流域特大洪水災害中九江市防護大堤發生的嚴重潰口破壞的滲流破壞機理。分析、比較得出結論：堤防下游坡腳的出逸比降接近和超過臨界比降，在1998年長江百年一遇的洪水條件下九江大堤潰口斷面的抗滲可靠性僅在55左右的非常低水平。
  4. Polar curve - a graph showing the performance of a wing based on it ' s airspeed and sink rate

    滑降比特性曲線用圖表顯示飛行傘飛行對空速度及沈降率基本特性。
  5. 10. after polluted by so2, both chlorophyll and protein content in resistant plant leaves and sensitive plant leaves decrease. the higher so2 concentration, the bigger decreased rate, and the decreased rate of sensitive plant is obviously bigger than resistant plant

    10 .在受到50 :污染后，杭性和敏感植物葉片中葉綠素和蛋白質的含量均有所降低，且50 :濃度越高，下降的比率越大，但敏感植物的下降比率顯著大於抗性植物。
  6. The best glide speed varies with changes in lift / sink and wind conditions ( head / tail wind )

    最佳滑降比飛行速度（對空速度）改變經常取決于飛行傘上升率及沈降率或者是飛行傘順風、逆風飛行狀況。
  7. In this study, we found that the activity of cytochrome oxidase in sos2 was lower than wild type

    在本研究中我們發現， sos2突變體中細胞色素氧化酶活性與野生型相比降低。
  8. This quality wrapped slurry is fit for our taste and dating, and after some cleaning it can be played at once. is the second piece covered with green fishskin

    這種成色包降比較符合國人的審美斷古眼光，稍作清潔整理即可把玩.第二把包的是綠魚皮嗎
  9. The results of carp ' s growth performance indicated : the mixed nutrient solution of psb could improve the increase of carp ' s weight than other three groups ( carp ' s diet of juxing, flavomycin, " yixubao " ), they are 9. 5 %, 9. 6 %, 15. 4 % respectively. and it could decrease the feed consumed / gain of carps than others, they are 2. 6 %, 6. 3 %, 4. 8 % respectively. all those showed that the mixed nutrient solution of psb could enhance the growth performance of carp

    光合細菌復合培養物作為飼料添加劑應用於鯉魚生產試驗，在飼喂35天後試驗組總增重分別比某公司魚飼料組、添加黃黴素組（ 3ppm ） 、 「益畜寶」組提高9 . 5 、 9 . 6 、 15 . 4 ，料肉比降低了2 . 6 、 6 . 3 、 4 . 8 ，說明光合細菌可以提高鯉魚的生產性能。
  10. The factors include antecedent precipitation of low flow period and status of karst basins ( such as lithology, landform, drainage area, drainage density, length and ratio of demotion of main river and so on. ). based on the former studies, integrated the conventional statistic methods, the technique of anns is applied in this paper for researching the law of the low flow of karst basins in guizhou altiplano

    影響喀斯特流域枯水徑流的因素異常復雜，其影響因素主要有枯季前期降水量和巖性、地貌、流域面積、河網密度、主河道長度及其比降等流域下墊面狀況。本文在前人研究的基礎上，採用人工神經網路技術，結合傳統的統計方法，研究貴州高原上喀斯特流域的枯水徑流規律。
  11. The bulk of effect on dredging river for deposition reduction is relative to chosen datum of dredging channel geometry parameter. geometry parameters include dredging channel length, morphology of transversal section and longitudinal slopes

    挖河減淤效果的大小與挖槽幾何參數的選值有關，幾何參數包括挖河長度、斷面形態及挖槽比降等。
  12. Hydraulic slope ; energy gradient

    水力坡度水力比降
  13. The main aim of system harness of man - made debris flow is to make potential debris flow not broken out and present debris flow decreased

    控制固體物質補給是關鍵，合理設計規劃棄土石渣的排放場地是重點，搞好匯水區水土保持系統工程是基礎，調整溝床比降，減少水流動能，使泥石流暴發減少到最低程度。
  14. Thinking about it, although winching was a little scary, it saved both time and energy when compared to hill - climbing

    事後回想起來，這樣空降，比以往爬山選址，雖然驚險，卻省時省力。
  15. The statistics show that the correlation of antecedent precipitation, lithology, landform, drainage density, drainage area, length and ratio of demotion of main river and four characteristics of low flow is very complex

    統計結果表明：流域的枯季前期降水、巖性、地貌、流域面積、河網密度、主河道長度及其比降等因子與喀斯特流域的枯水四特徵的相關關系異常復雜。
  16. The traction motor drives through a constant ratio reduction gearbox to the standard rear axle which is the sole means of driving the rear wheels of the trolleybus

    無軌電車的動力馬達經由一恆比降速波箱，標準的巴士尾輪軸推動尾輪。
  17. ( 2 ) a series of experiments on time scale distortion are made with real river model, inflow and outflow boundary condition, and continuous simulation. by means of analysis of the experimental data on model water level, water - surface gradient, cross velocity, outflow discharge process and the sediment transportation capacity, the main physical reasons for the above hydraulic parameters deviations caused by time scale distortion are illustrated : response delay of model channel storage capacity and rate of water level with time

    （ 2 ）採用真實的河工模型和入出流邊界控制條件以及連續模擬的方法進行了有關時間變態率的系列試驗，通過模型水位、比降、流速、出口流量過程線和斷面挾沙力試驗資料的分析，闡明了時間變態引起上述各種水力參數偏離的主要物理原因：模型的槽蓄響應和洪水過程時間變化率的響應滯后。
  18. Like closing valves, fluid movements of check valve through the channel is narrow and therefore the lifting of check valve through the pressure drop kai xuan than some big - check valve, and the rotary kai - flow check valves are very few restrictions

    像截止閥一樣，流體通過升降式止回閥的通道也是狹窄的，因此通過升降式止回閥的壓力降比旋啟式止回閥大些，而且旋啟式止回閥的流量受到的限制很少。
  19. The experiment data shows that the region with large surface gradients in longitudinal and horizontal direction locates at the vicinity of spur dike. backwater appear upstream the spur dike, and there exist a recirculation area at the same side downstream the spur dike

    實測水位資料表明水流縱橫向比降大的區域位於丁壩上下游附近，在丁壩的上游出現壅水，下游存在有收縮區和恢復區，離丁壩越遠縱橫向水位的變幅越小。
  20. Abstract : variations of flow pattern, flow velocity in deep poo l and side bar, mainstream thread, and water surface, caused by excavation project, are investigated by two - dimensional mathematical model in an orthogonal curvili near coordinate system. the change of bed - load transport rate, and redeposition r ate are predicted. the influences of the excavation project on navigation are ana lyzed. grid - type and flat - type excavation alternatives are proposed and discuss ed

    文摘:採用正交曲線坐標系下的河道平面二維數學模型，研究了嘉陵江何家磧邊灘采砂后河道流勢、流態、灘槽流速、主流位置、水面高程及比降的變化規律，預測了采砂方案完成後卵石推移質輸沙率變化及其對航道的影響，並對格形開挖和平整開挖方案進行了比較分析
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