rate of air change 中文意思是什麼

rate of air change 解釋
換氣率
  • rate : n 1 比率，率；速度，進度；程度；（鐘的快慢）差率。2 價格；行市，行情；估價，評價；費，費用，運費...
  • of : OF ＝Old French 古法語。
  • air : n 1 空氣，大氣。2 天空，空中。3 微風，和風。4 態度，樣子，風度，氣派；〈pl 〉高傲的架子。5 傳播，...
  • change : vt 1 改變，變更，變換，變革。2 交換；兌換；把（大票等）換成零錢；把（支票等）兌成現金。3 換（車、...
  1. 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。
  2. A coke oven represents a kind of controlled object with a full spectrum of closely coupled factors, such as distributed parameters, no - linearity, time - dependent change and multi - variable features. among them, the discharge header pressure and fan suction are key parameters, and also constitute strongly coupled variables with very close inter - relation, which are fulfilled by the way of regulating coal - feeding and the rate of primary air supply in practice

    焦爐是一個分佈參數，非線性、時變、多變量緊密耦合的被控對象，其中集氣管壓力和鼓風機吸力既是關鍵參數，又是具有緊密關系的強耦合變量，它們均是通過調節給煤量和一次送風量來實現控制的。
  3. The studies expressed that the tensile - strength declined with the growth of dose rate after the radiation treatment, and at the same time, the gel content had extreme value with the change of the dose rate. the surface of uhmwpe fibers showed some irregular micro - pits and dents after radiation treatment, narnely rough degree increasing. their number and deepness increased with increase of dose. and this phenomenon is the most obvious when the dose rate was 8. 5kgy / s and the dose was 400kgy. at the same time some containing oxygen groups, including hydroxyl group, carbonyl group and carboxyl group, were introduced into the fiber surface which was exposed to the air

    研究表明， uhmwpe纖維經電子束輻照處理后，纖維的拉伸斷裂強度隨劑量率的增加呈下降趨勢，凝膠含量隨著劑量率的變化存在極值。纖維表面出現了不規則的微裂紋和凹痕，隨著劑量的增大，電子束對纖維表面的刻蝕程度增加，在本研究中以劑量為400kgy劑量率為8 . 5kgy s時刻蝕效應最為明顯。同時，在空氣中進行輻照時，纖維表面被引入了一些含氧基團，包括羥基、羰基和羧基。
  4. It uses electronic control technology and places an oxide sensor in emission system, then according to the change of the rate of the air to fuel, adjust automatically the ejection of fuel. so it can improve dramatically the automobile performance. after installing three - way catalytic converter, it can make the pollutions lower 20 % ~ 50 % than the same vehicle, and the power of car reduce only 5 %

    對于適合我國現階段的電子閉環控制lpg燃料混合系統進行研究，此方法採用電子控制技術，在排氣系統中安裝了氧傳感器，可以根據排氣空燃比的變化，自動反饋調節供氣量，使燃氣汽車性能得到改善，安裝三元催化轉換器后，可以使污染物排放較同等水平的汽油車降低20 - 50左右，而發動機功率下降僅達5左右。
  5. Based on the test data, and by using the distillerys grain drying curve and drying - rate curve, this paper analysed the distillerys grain drying process, and demonstrated the characteristics of the drying and the change of drying - rate of the distillerys grain in heat - air penetrating bed

    根據試驗所測數據，利用三次樣條插值函數擬合酒精糟乾燥曲線和乾燥速度曲線，深入分析酒精糟的乾燥過程，得出酒精糟在熱風穿床乾燥方式下的乾燥特點和乾燥速度的變化規律。
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