荷大 的英文怎麼說

中文拼音 [hédà]
荷大 英文
dutch grand prix
  • 荷 : 荷名詞（蓮） lotus
  1. Contrast between this machine and traditional rolling screen : adopt lower driving, the carrying ability is great, running is stable which settle the problem, such as great torsional moment of central drive, startup loading is great with shock of chain driving

    本機與老式滾筒篩相比，因為採用下傳動有承載能力大運轉平穩，特別克服了中心傳動扭矩巨大，起動負荷大，鏈傳動沖擊等缺點。
  2. In view of this situation this article has conducted research to the design of metallurgy auxiliary biography with the frequency conversion table electrical machinery first multianalysis to the frequency changer and the frequency conversion table electrical machinery movement characteristic is carried out, the voltage waveform harmonious which the frequency changer outputs is big, attacks in a big way, and the voltage climbing rate reaches as high as 6600v / mu s which is 20 times ordinary sine alternating voltage, the rolling mill auxiliary biography table set the extremely strict request to the electrical machinery ; its movement frequency is very low, rate frequency in 8 - 20hz ; the velocity modulation scope is wide, the lowest movement frequency lowers to 1hz, and the starting number of times is quite frequently, each hour reaches as high as 600 - 800 time, the impact shoulders in a big way, the overload capacity request is high

    針對這一情況本文對冶金輔傳用變頻輥道電機的設計進行了系統研究。首先對變頻器和變頻輥道電機的運行特性進行詳細分析，變頻器輸出的電壓波形諧波大，沖擊大，電壓上升率高達6600v / s ，是普通正弦交流電壓的20倍;軋機輔傳輥道對電機提出了十分嚴格的要求:其運行頻率很低，額定頻率在8 - 20hz ;調速范圍寬，最低運行頻率低到0 . 5hz ，起動次數相當頻繁，每小時高達600 - 800次，沖擊負荷大，過載能力要求較高。
  3. Finally, we can not use electric power but the engine of bus or subsidiary engine to drive air compressors of bus air conditions. because the change range of turnaround speed of engine is very wide, that brings difficulties in controlling the rate of flow of cold - producing medium. in the control of bus air - conditions, preventing evaporator from freezing to make the air - conditions work with high efficiency and controlling the temperature of railway carriage are the basic tasks in air - condition control

    與一般的建築空調相比，汽車空調的工作環境惡劣，條件差，控制難度要增加很多，主要體現在以下幾個方面：一是車外熱負荷變化大，難以確定控制參數；二是要求空調負荷大，而且要控制空調使其降溫迅速：三，不便於用電力作為動力源，必須用汽車發動機或輔助發動機來帶動壓縮機，當採用汽車發動機作為動力源時，由於汽車的車速變化大，發動機轉速的變化可從600r min到4000r min ，壓縮機轉速與發動機轉速成正比，其轉速變化高達7倍，給空調系統製冷劑流量控制帶來困難。
  4. When cooling load is less than ice - melting ability, optimal control strategy is just ice priority, optimal control saves 24 - 45 % operating cost compared with chiller - priority. when cooling load is more than ice - melting ability but still less than ice - melting ability plus half of chiller cooling ability, optimal control is to keep chiller load to half of chiller cooling ability and tune ice - melting to meet load, optimal control consumes 13 - 20 % more power but saves 9. 2 - 11 % operating cost compared with chiller - priority. when cooling load is more than ice - melting ability plus half of chiller cooling ability, optimal control is just ice - priority again, optimal control is to keep ice - melting to maximum and tune chiller to meet load, optimal control consumes 0 - 13 % more power but saves 0 - 9. 2 % operating cost compared with chiller - priority

    在冷負荷大於融冰供冷最大功率時，又分兩種情況:總冷負荷小於融冰供冷最大功率加一半的單主機滿負荷時，優化控制是保持主機供冷負荷系數為0 . 5 ，通過調節融冰來改變冷負荷，此時與主機優先比較增加能耗13一20 % ，節約運行費達9 . 2一11 % ;在冷負荷大於融冰供冷最大功率加一半的單主機滿負荷時，優化控制就是融冰優先，通過蓄冰槽滿負荷運行，調節製冷主機來調節冷負荷，此時比主機優先控制僅增加能耗o一13 % ，但能節約運行費o一9 . 2 % 。
  5. Baf has many advantages, such as small volume, little covering earth and hydraulic retention time ( hrt ), high treatment efficiency and effluent water quality, low investment and running cost etc. baf has been used widely for many years in the world and been used to treat several wastewater in our country. in this paper, baf was studied on guanting reservoir water source treatment with pilot scale and homemade expanded clay as filtration media

    曝氣生物濾池（ biologicalaeratedfilter ，簡稱baf ，或biologicalfiltrationoxidizationreactor ，簡稱biofor ）工藝具有體積小、容積負荷高、水力負荷大、水力停留時間短、所需基建投資少、處理出水水質好等特點，國外已廣泛應用，國內也在多個行業的水處理中成功應用。
  6. The major portion of the loading on an open frame structure consists of the drag loading.

    作用在構架外露的結構物上的載荷，大部分是由拖曳載荷構成。
  7. From time to time, scientists have speculated that the proton and electron charges might not be exactly equal in magnitude.

    屢次地，科學家們推究質子與電子的電荷大小可能不恰好相等。
  8. Effects of total flavones of metasequosia on left ventricular hypertrophy due to pressure overload in rats

    水杉總黃酮對壓力超負荷大鼠左室肥厚的作用
  9. The experimental result shows that membrane bioreactor has unique characters, such as high load activated sludge, stable discharging water, quick biological reaction velocity, small occupation area, and simple maintenance and management

    試驗結果表明：膜生物反應器法具有污泥負荷大、出水水質穩定、生化反應速率快、佔地面積少和維護管理簡便等特點。
  10. The combination of high effective fields with chemical treatments is the future trend of oil - field water disposal technology

    注水管網的清防垢技術有多種，化學清防垢技術目前仍然是油田常用技術，但成本高、環境負荷大。
  11. With the development of modern industry, the nonlinear loads of power system are greatly increased. they absorb the non - sine current waves from power network and result in voltage aberrance. voltage aberrance makes the power quality severely deteriorate, endangers the safe and economical running of power system and affects some users ’ s normal work

    隨著現代工業的發展，電力系統中的非線性負荷大量增加，這些非線性負荷從電網吸收非正弦電流，導致電網電壓發生畸變，使電能質量嚴重惡化，危及電力系統安全和經濟運行，影響了用戶的正常工作。
  12. Back at the university of idaho in moscow, idaho, where she is a doctoral candidate in soil science, word got around that sanchez - de leon had found what many experts were beginning to think had grown extinct

    在桑雪茲-迪里昂作為土壤科學博士候選人的愛達荷州莫斯科市愛達荷大學，人們都在談論著她發現許多專家開始認為已絕種的生物。
  13. The author defined the risk of water supply in plain reservoir through the probability if the water demand is bigger than project ' s carrying capacity, and elaborated the risk analysis of water supply source system and the simulation method

    以供水工程承擔的供水外來負荷大於工程本身的承載能力的概率定義了平原水庫供水水源系統的風險，闡述了供水水源系統風險分析及模擬方法。
  14. Because of differences such as charge, size and shape and mobility, the various complexes of metal behave differently chemically.

    由於諸如電荷、大小、形狀及淌度的差別，各類金屬混合物呈現不同的化學性質。
  15. Suitable for demanding to use high load, high - power, four strokes, gush out directly, the cold type diesel engine in turbine pressurizations of the api cf - 4 sg grade oil, include various kinds of domestic and importing the heavy - duty transportation vehicle of the new - type diesel engine and engineering machinery working under various kinds of harsh operating modes, lubrication of mine equipment, diesel oil generating set

    用途適用於要求使用api cf - 4 sg級油的高負荷大功率四沖程直噴渦輪增壓中冷式柴油發動機，包括各種國產或進口新型柴油發動機的重型運輸車輛及在各種苛刻工況下作業的工程機械礦山設備柴油發電機組的潤滑。
  16. On the exhibition of northeast asian new and high technology and product 2004, the vice mayor of shenyang city wang ying introduced to the attendances that on the schedule of shenyang city revolution and opening up ten fields can offer good cooperation opportunities to the other countries and areas of domestic enterprises, the complete automobile and spare parts manufacturing is one of this fields. shenyang automobile industry has special features also has the most brands in our country, such shenyang is also the deeply degree of opening up, bmw of germen, ge of american, hino of japan

    專業人士表示，後置后驅車輛的重量集中於汽車的後部，發動機距驅動軸很近，因而驅動輪負荷大，啟動加速時牽引力大，且傳動效率高，燃油經濟性好發動機等主要部件後置有利於車身內部布置，車廂內的面積利用率高，且易於將發動機與車廂隔開，減少車廂內的振動和噪聲，乘坐舒適性良好。
  17. The results indicate that the contributions and co - payments borne by the high - income population were greater in amount and at a greater rate of increase than those borne by the low - income population after the policy change

    就保費或部分負擔相對于每人平均所得的比例，低所得者的負荷大於高所得者，但是，政策調整后的保費負擔分配累退性明顯比政策調整前的保費負擔累退分配減緩，部分負擔的分配累退性也未在政策調整后惡化。
  18. The earthquake force was ignored during designing midget pump station, while the pseudo - static method just gave approximate calculation to the large and medium pump station ever

    在以往的泵站設計中，對于小型泵站，一般不考慮地震力；對于大中型泵站，即使考慮地震載荷大多都運用擬靜力法，進行大致的近似計算。
  19. The results of orthogonal experiment shows that the effect of the volumetric flow of exhaust gases is the most notable ; the effects of the number of exhaust inlets and the heat released rate of fire source are less notable than the effect of the volumetric flow of exhaust gases on the smoke layer interface ; the effects of the separation of exhaust inlets, the interrelation between the number and the separation of exhaust inlets and the location of exhaust inlets are notable ; but the rest factors " effects are not obvious

    實驗結果表明：對煙氣層高度影響特別顯著的是排煙量大小、排煙口數量和火災負荷大小三個因素；排煙口間距，排煙口數量與間距的交互作用，排煙口位置和大小對煙氣層高度的影響也比較明顯；而排煙口大小與間距，大小與位置，大小與數量，位置與數量，位置與間距之間的交互作用對煙氣層高度的影響不大。
  20. To investigate the aerodynamic design ideas and concrete methods of high performance low pressure turbine ( lpt ) at low reynolds number condition, a new lpt of high load, large chord and proper velocity distribution was designed

    摘要為了探索高空低雷諾數情況下高性能低壓渦輪部件的氣動設計思路和設計方法，通過採用高負荷、大弦長的葉片設計和選擇恰當的葉片表面速度分佈形式設計了一臺新低壓渦輪。
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