combined valve 中文意思是什麼
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Cacv combined air control valve
組合空氣控制閥 -
Objective : to evaluate the surgical treatment of tricuspid valve disease combined with cardiac cachexia
摘要目的：探討合併心臟惡病質三尖瓣病變的手術治療。 -
Gas solenoid valve - combined valve vq465 480 series
燃氣電磁閥-組合閥vq465 480系列 -
The stability of electric power system has been being focused for a long time toprevent a power system from losing synchronism after sudden fault ， researchers have done much work and got many accomplishments this paper applied the direct feedback linearization ( dfl ) technique on the power system ， a strong nonlinear system simulation results by matlab proved this method efficiency main works and results are as follows ： this paper compared some existing methods in excitation control ， fast valve control and coordinated control respectively, analyzed the developments and actuality of nonlinear control research in brief, illustrated why ransient stability could be greatly improved by using the fast valve control in chapter 3 ， indicated the importance of coordinated control farther this paper introduced the inverse system theory, based on which ， discussed the dfl theory, pointed out which had consistency with the inverse theory, expanded the dfl theory combined the idiographic model equations ， made which adapt to the model of a single machine - infinite bus power system this paper referenced abundance articles and educed a set of equations ， which could describe the dynamical process of excitation and fast valve control for synchronous generators in the equations ， there were several very important parameters of power system - - rotor angle ( ) ， rotor speed ( ) ， generator q axis voltage ( eq ) ， transient voltage ( e ' q ) ， active power ( pe ) ， mechanical input power ( pm ) ， valve opening ( ) ， generator terminal voltage ( vt ) ， based on the model ， nonlinear coordinated controller and terminal voltage optimal controller have been designed by using the expanded dfl theory and lq optimal control theory the simulation results showed that the controller could keep power system transiently stable under the effects of a symmetrical 3 - phase short circuit fault ， which achieved better postfault regulation compared with another two routine methods ， one is the proportion excitation controller and proportion fast valve controller, the other is the proportion excitation controller and the optimal fast valve controller, which could exert good performance when met 1ittle disturbance either
在介紹逆系統理論的基礎上，詳細介紹了dfl理論，通過比較闡明了dfl理論其本質是逆系統方法的一類，並結合具體課題推導出的模型方程將dfl理論進行了擴展，使之適應于電力系統這個強非線性對象。通過參考大量的書籍文獻推導出一套實用的可將大型汽輪發電機勵磁與汽門綜合起來進行控制的模型方程，此模型方程涵蓋了電力系統中特別引人注目的幾個量- -轉子角、轉子轉速、發電機q軸電勢eq 、暫態電勢e ' q 、有功功率pe 、機械功率pm 、汽門開度、機端電壓vt ，在此基礎上建立了實用的電力系統簡化的數學模型，並將擴展的dfl理論應用於此模型系統，結合線性二次型最優控制理論設計出大型汽輪發電機的非線性綜合控制器及機端電壓最優控制器，通過模擬實驗與採用常規的按電壓偏差進行調節的比例式勵磁控制器+汽門比例控制及採用常規的按電壓偏差進行調節的比例式勵磁調節器和基於二次型性能指標設計的最優快控汽門（考慮發電機的飽和因素）進行了對比，證實了採用此種控制器可以有效地提高電力系統的暫態穩定性，並且在電力系統遭受小干擾時同樣具有良好的調節性能。 -
On these bases, the author combined the method of analytic function, finite difference and numerical approximate in the optimizing design of valve train cam profile, and developed a special software with the exclusive purpose in the valve train cam profile design
在此基礎上，採用解析函數與有限差分法及數值逼近相結合的方法對配氣凸輪型線進行了優化設計，開發出了用於配氣凸輪型線設計的專用軟體。 -
Combined strainer and check valve
混合濾塵止回閥 -
With its exclusive patented relief valve design incorporating the " air - in / water - out " principle, it provides substantially improved relief valve discharge performance during the emergency conditions of combined backsiphonage and backpressure with both checks fouled
配置獨特專利技術安全閥結構，採用「氣進/水出」原理，當兩個止回閥被污染並且產生反虹吸和反壓力緊急狀況下，這種原理實實在在改善了安全閥的排泄性能。 -
The secondary combustion, which has better controllability, and plays the most pivotal role on the overall performance of a strutjet, so the paper detailedly studied and analyzed the mechanism of fuel ' s atomization, the mechanism of fuel ' s spray burning, vital spray burning models and the combustion ' s controllability, combined with the author ' s practical investigation in the rbcc lab, finally, the author got a most simple and feasible method to control the spraying burning of liquid kerosene - - to set up an adjusting valve in the fuel pipeline
文中重點對燃油的霧化機理、燃油的噴霧燃燒機理、主要的燃燒模型和燃燒過程的可控性，展開了詳細地分析研究，並結合在rbcc實驗室的實際研究，獲得了對燃油噴霧燃燒進行調節的最簡單、可行的方法，即在燃油管路上設置流量調節閥。於是燃燒組織問題轉化為對該調節閥的開度如何施加適當控制的問題。 -
Gas welding equipment. hydraulic safety seals and combined " non - return valve flame arrestor " devices for acetylene generators. requirements and tests
氣焊設備.乙炔發生器用液壓安全密封件及止回閥滅火器組合裝置.要求和試驗 -
The watts series tdv valve bodies have anti - rotation lugs on the inlet and outlet. these lugs, combined with the watts flange adapters, provide a ridged rotation free installation
在進口和出口處，美國瓦茨系列tdv閥體有反旋轉凸耳。這些凸耳，結合美國瓦茨法蘭適配器，提供無旋轉安裝功能。 -
This valve is a combined regulating and flow measurement device and must be installed with five diameters of straight pipe of the same nominal diameter as the valve and without intrusions upstream of the valve
這種閥門是一種調節和流量測量的組合裝置，必須安裝在與閥門公稱通徑一致的直線管路，長度為五倍直徑的位置，使得閥門上游不會受到侵擾。 -
Gas solenoid valve - combined valve vr400 series
燃氣電磁閥-組合閥vr400系列 -
Gas solenoid valve - combined valve vq400 series
燃氣電磁閥-組合閥vq400系列 -
The combined 2 in 1 t & p relief valve provides the least expensive and proven means for protection against both excessive temperature and pressure emergency conditions
2合1溫度壓力安全閥，對于溫度過高，壓力過大的緊急狀態提供成本最低，最有效的保護方案。 -
Results : among 64 cases with crf, the echocardiographic findings were mitral valve calcification ( mac ) in 9 cases, mitral regurgitation ( mr ) in 5 cases, mitral stenosis ( ms ) in 2 cases, aortic valve calcification in 12 cases, aortic regurgitation in 7 cases, combined mitral and aortic valves cacification in 5 cases, respectively
結果: 64例患者中發現二尖瓣鈣化9例，二尖瓣返流5例，二尖瓣面積減少致狹窄2例，主動脈瓣鈣化12例，主動脈瓣返流7例，二尖瓣並發主動脈瓣鈣化3例。
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