直熱式極 的英文怎麼說
中文拼音 [zhírèshìjí]
直熱式極
英文
heater cathode-
After thermodynamic calculation on several operation conditions of the furnace, cold - state flow and resistance mensuration, the combustion of the tubular - furnace hearth was changed into swirl and addition of radiate cylinder and oxygen content detection minish 1. 25 surplus air to less than 1. 15, improving the combustion condition and convection and radiate heat transfer efficacy, resuling in reducing the waste - gas temperature 45, decreasing exhaust gas loss, and saving fuel by 6 %
摘要通過對加熱爐幾種工況進行熱力計算、冷態試驗的流場分佈及阻力測定和熱態試驗的爐膛溫度場分佈及管壁溫度等參數的測定，確定將管式加熱爐爐膛內直流燃燒改為旋流場燃燒和增加輻射筒，增設煙氣含氧量分析，可以將燃燒的過剩空氣系數從1 . 35減小到1 . 15以下，極好地改善爐膛內的燃燒狀況和對流輻射傳熱效果，從而降低排煙溫度45 ，減少加熱爐排煙損失，節約了煤氣量6 %以上。General model c38 dc meters are portable taut - band suspended moving coil instruments with light - spot indication. the meters have the feature of extremely high in sensitity and small in consumpition being particularly suitable to be used for measuring weak electric quantity on dc circututs, also for testing the static paramenters of transistors as well for measuring the output of millivolt values of zhermocouple in the vacuun furnaces ( or hydrogen furnaces )
C38型直流電表是磁電系張絲支承光點指示可攜式電表儀表具有極高的靈敏度，功耗小，特別適合弱電量直流電路測量及晶體管靜態參數測試用以及用做真空爐（或氧氣爐）中測量熱電偶的輸出毫伏值3. when table sugar was used as starting materials, it was used and pyrolyzed directly or was first mined with sulphuric acid after surface area of those materials is not larger than that of pas capacity is small in their electric double - layer capacitor, specific surface area has great effect on capacity, the larger specific surface area is, the higher capacity is, . but bulk density will decrease with increase of specific surface area
當以食糖為熱裂解碳的原料時，採用直接焦化和酸洗焦化兩種方式。所制備的樣品比表面積沒有聚並苯材料的大，在以30 h _ 2so _ 4為電解質的雙電層電容器中，容量相對較小。電極活性物質的比表面積對雙電層電容器的容量有很大的影響。Directly heated cathode
直熱式陰極The immersion electrical heater is chiefly applied in the direct contact mode of fluid heating. it features fast heat exchange and high thermal efficiency. it has the varieties of water heater, oil heater and gas heater. its heating element power density, i. e. the power per unit of heating area of the heating element, is an important parameter of the electrical heating element, which has a direct bearing on the performance and working life. the working out of the value is a highly specialized problem, being under the influence of many factors ( media flow rate, tempt, physical and chemical properties and direction in which the medium flows past the element etc )
浸入式電加熱器主要用於直接對流體接觸加熱的場合，具有熱交換快，熱效率高等特點，分為水用加熱器、油用加熱器、氣體用加熱器，加熱元件的功率密度：即電加熱元件單位發熱面積上的功率，它是電加熱元件極重要的參數，直接影響加熱器的使用性能及使用壽命，它的取值是一個非常專業的問題，受到許多因素的影響（如介質的流速、溫度、物理和化學性質及介質流過加熱元件的方向等等） 。By theoretical analysis and experimental investigation to the exasperate position of the heat transfer in the umbrella - plate falling film evaporator, the exasperate experimental formula of the heat transfer was obtained. with the same reynolds, the high - point heat flux density of umbrella - plate evaporator is higher than vertical - plate evaporator could be observed from above formula, which maked out that with little reynolds liquid film was not easy to break
在實驗條件下得出了傘板式降膜蒸發器小流量下液膜破裂的實驗關聯式，此關聯式表明極限熱通量隨臨界雷諾數增大而增大，在相同的臨界雷諾數下，傘板蒸發器的極限熱通量大於直板形蒸發器的極限熱通量。Utilizing method of function extremum, it is proved that there lies minimum coefficient heat transmission in sealed vertical air layer, that is to say there exists the minimum theoretical equivalent conductivity factor. furtherly, the equation of the most excellent thickness of air interlayer is obtained
運用函數求極值的方法，證明了封閉垂直夾層中的傳熱系數存在極小值，即封閉垂直夾層在理論上存在最小的當量導熱系數，並推導出了最佳空氣夾層厚度的理論公式。分享友人