劑量計數器 的英文怎麼說
中文拼音 [jìliángjìshǔqì]
劑量計數器
英文
batching counter- 劑 : Ⅰ名詞1 (藥劑; 制劑) a pharmaceutical or other chemical preparation 2 (某些有化學作用的物品) a...
- 量 : 量動1. (度量) measure 2. (估量) estimate; size up
- 計 : Ⅰ動詞1 (計算) count; compute; calculate; number 2 (設想; 打算) plan; plot Ⅱ名詞1 (測量或計算...
- 數 : 數副詞(屢次) frequently; repeatedly
- 器 : 名詞1. (器具) implement; utensil; ware 2. (器官) organ 3. (度量; 才能) capacity; talent 4. (姓氏) a surname
- 劑量 : [物理學] [醫學] dosage; dose; dosis劑量槽 dosage bunker; 劑量測定(法) dosimetry; health work; ...
- 計數 : count; tally; counting計數卡 numbered card
-
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。The thesis focuses on the development of the dynamic simulation model of evaporators, the accomplishment of the stable and dynamic simulation of the parameters of cryogen - side, air - side and how to carry out dynamic simulation on the refrigerating effect of evaporators under different evaporating temperature and the realization of the analyses and calculations of the main parameters, such as, the wind speed of air - side and specific humidity etc, which affect the function of evaporators
本文重點是對蒸發器建立動態模擬模型,並對製冷劑側和空氣側參數進行穩態和動態模擬,同時對蒸發器在不同蒸發溫度下的製冷量進行了動態模擬,而且對影響蒸發器性能的主要參數(空氣側入口風速、入口含濕量等)進行了分析和計算。At last, the impact of the monolith length, cell density, wall thickness and noble metal dosage on the light - off characteristic and conversion efficiency of three - way catalytic converter are analyzed and could provide a guide for the optimization of three - way catalytic converter
本文還對載體長度、孔密度、孔道壁厚和催化劑用量對催化轉化器起燃特性和轉化效率的影響進行了分析,為載體參數的優化設計提供了依據。Examinations of steady status and analysis of dynamic experiments have been conducted on band - tube evaporator and parallel - flow condenser using r134a refrigerant. the steady examination show that the model error was under the allowable error, the inlet mass and enthalpy disturb experiments indicate that the subsection model, be good at reflecting the change of parameters of the heat exchanger, accord with the basic principle of thermodynamics theory and the actual work status. hence, the subsection simulation model research has important benefits both on theory and engineering application
在進行模擬試驗時,以使用r134a作製冷劑的管帶式蒸發器和平行流式冷凝器為對象,完成了穩態模擬計算、試驗和動態模擬分析,穩態計算結果和試驗數據對比表明,其誤差在允許范圍內;進口質量和焓值的擾動試驗結果表明:本文所建的區段式換熱器模擬模型,能很好的反映換熱器性能參數的動態變化,與系統熱動力學理論和冷凝器、蒸發器的實際工作過程基本一致。In this paper. flow properties of multistage fluidized - bed bioreactor with external circulation at a pilot scale is studied. according to characteristic analysis, the model of completely mixing reactor in series is introduced to characterize real reactor as a theoretical model. on the basis of analog computing analysis and discussion of theoretical model. by means of pulse tracer method, experiments on residence time distribution ( rtd ) have been done in different conditions including the change of tracer level, feeding flow rate and circulation flow rate. the result shows when the ratio of circulation flow rate and feeding flow rate amounts to at least 4, the flow properties of multistage fluidized - bed bioreactor with external circulation at a pilot scale is very close to the model of completely mixing reactor in series. an amendatory model has been established by the regression method
作者首先在對反應器進行特徵分析的基礎上,建立了描述中試規模多級外循環流化床生物反應器流動特性的串級全混流模型,並對理論模型進行了模擬計算分析和討論,在此基礎上,作者分別在無循環和有循環(改變示蹤劑用量、流加流量和循環流量)的條件下,利用脈沖示蹤法對一到五級串聯外循環流化床反應器進行了停留時間分佈實驗,結果表明,在循環流量與流加流量的比值達到大於等於4時,中試規模多級外循環流化床反應器的流動特性接近串級全混流模型,通過數據回歸擬合的方法,建立了中試規模一到五級串聯外循環流化床反應器的流動模型。The doctors can observe the relationship and geometry of the organs and the tumors, from the 3d model of the human body, which can help them create the therapy plan. the radiation dosimetry is built using monte carlo method. after we extract the iso - surfaces from the volume of the doses, the relationship between radiation doses and the cancer is represented on a 3d model, which is greatly helpful for the doctors to improve their therapy plan
通過建立三維人體模型,可以幫助醫生直觀的觀察人體內部病灶及組織器官的形態位置尺寸,並獲得其量化指標,從而更加準確的制定治療計劃:根據初步的放療計劃,使用montecarlo方法建立模擬的放射劑量分佈數據場,再通過等值面提取方法獲得等劑量面,顯示並量化劑量分佈情況和病灶(靶區)的關系;根據模擬的結果對放療計劃進行適當修改,並最終獲得最佳的放射治療計劃。By application investigation of mix subsystem in practice, special measure device was produced and substituted the widely used electromagnetic flow meters in order to solve the problem of original coagulant measurement existing in the chemical mixture. this device is simple in structure and apt for automatic control. using this method to realize automatic mixture of chemicals can decrease numbers of system instruments
通過配液子系統在生產實踐中的應用研究,針對藥液自動配兌過程存在的混凝劑原液計量問題製作專用計量裝置取代普遍採用的電磁流量計,該裝置結構簡單、易於實現自動控制,採用這種方式實現自動配液減少了系統採用的儀器儀表數量。分享友人