系氣敏元件 的英文怎麼說
中文拼音 [xìqìmǐnyuánjiàn]
系氣敏元件
英文
zinc oxide series gas sensor zno-
Alb air braking systems ; labels for load sensing devices
氣制動系統.負荷敏感元件標志牌Second, the starting and stopping behaviors under disturbed condition are analyzed and calculated by using the dynamic concentrative parameter model, which gives some advice to better prescribe refrigeration system and set theoretic foundation for carrying out automatic control of refrigeration system. third, the normal running process is analyzed and calculated by means of rational matching theory, which gives some advice on how to better understand the parameter change under steady state and the affection of inlet - parameter on evaporator. fourth, the simulation software with dynamic characteristic is designed, which can be applied to calculate thernio - parameter of cryogen, air humidity and frost thickness under different initial and boundary conditions, and to carry out dynamic simulation under conditions of dryness, wetness and frostiness, at the same time, to achieve detection and simulation at any stage from starting to stopping
本文的主要內容如下： 1 ）對翅片管蒸發器結構特點進行分析，選取適當的微元控制體，就干、濕和霜工況下對每個微元分別進行傳熱傳質分析，基於經驗關系式確定霜的有關參數，對于霜工況下的霜生長建立模型，經適當假設，運用質量守恆、能量守恆和動量守恆方程建立適合動態模擬的蒸發器數學模型，為系統模擬奠定基礎； 2 ）對蒸發在大擾動下的開、停機過程，運用動態集中參數模型進行分析和計算，為更好地描述製冷系統運行的全過程奠定基礎，同時也為製冷系統實現自動控制提供一定的理論基礎； 3 ）對蒸發器正常運行過程，運用動態分佈參數和參數間定量耦合的觀點來分析和計算，為更好地了解穩態工況下各點參數的變化情況及各入口參數對蒸發器動態特性的影響即蒸發器性能對各參數變化的敏感性； 4 ）編寫翅片管蒸發器動態特性模擬計算程序，可以計算不同邊界條件和初始條件下的製冷劑熱力參數、空氣溫濕度和霜厚度分佈場，實現對翅片管蒸發器在干、濕和霜工況下的動態模擬。Thirdly, according to the conservation of energy principle, this paper analyzes the relationship between the hot ? ire and the airflow rate, establishes primary model of the hot ? ire. in this paper the simple mathematical model of pfras were given out
（ 3 ）利用能量守衡的原理，分析了傳感器敏感元件中的熱線與氣流速度之間的關系，建立了熱線的基本模型，從而給出壓電射流角速度傳感器的數學模型。Compound oxide series gas sensor
復合氧化物系氣敏元件Zinc oxide series gas sensor, zno
系氣敏元件Tin oxide series gas sensor sno
系氣敏元件3 ) studying the principle and method of many sensitive elements which are used to detecting the gases dissolved in oil, author bring forward the viewpoint that sensors of mq series have obvious selectivity and higher accuracy when they detect gases of h2, co, ch4, c2h4, c2h2and c2h6 dissolved in oil. especially, the accuracy of c2h2 which reflects the main faults of transformer can reach 1ul / l
3 ）研究採用多種傳感元件檢測變壓器油中多種溶解氣體的原理及方法，研製的mq型系列傳感器對變壓器油中h2 、 co 、 ch4 、 c2h4 、 c2h2 、 c2h6六種溶解氣體具有明顯的選擇性和較高的靈敏度，特別對體現變壓器內部絕緣故障較敏感的c2h2氣體的檢測靈敏度達1 l / l 。分享友人