Research on water hammer characteristics of air valves Research on water hammer characteristics of air valves has been studied in experiments by establishing mathematical model of the air valve, using suitable method of numerical calculation, and comparing the experimental outcomes with theoretical analysis.

空氣閥特性研究試驗研究了作為水錘防護裝置的空氣閥的特性，建立了空氣閥數(shù)學模型，通過合適的計算方法進行數(shù)值計算，并與試驗進行了比較。

As an important part of the research, the effects of these parameters on fuel/air mixing in the wall jet and boundary layer are studied.

作為研究的一個重要方面理论日韩中文，分析和討論了這些參數(shù)變化對壁面噴注及壁面附面層內(nèi)燃空混合的影響。

This paper studied the frequency response of hot-film air mass flow sensors by the theoretical analysis and experimental research methods.

應(yīng)用理論分析和試驗的方法激情黄区1区，研究了熱膜式空氣質(zhì)量流量傳感器的靜態(tài)響應(yīng)和動態(tài)響應(yīng)特性欧美又大又粗一区二区。

Taking the autobus of city as the researchable object,for the characteristic of run and power,the basic design parameter of the hydraulic system was studied.Based on much aspect of factor,for example,the cost and benefit,the power and security,hydraulic switching system of inertia as being used the pump/motor and the container of air sac type as the representative characteristic was designed.And the e...

以城市公交汽車為研究對象，根據(jù)其運行特點及動力特性擬定液壓系統(tǒng)的基礎(chǔ)設(shè)計參數(shù)国产WWWWW免费在线观看，在綜合分析了成本與效益亚洲色欲综合网在线观看A，動力性與安全性等多方面因素的前提下，設(shè)計了以氣囊式蓄能器及泵/馬達一體部件應(yīng)用為典型特征的慣性能量液壓轉(zhuǎn)換系統(tǒng)色天堂视频在线，實驗證明該系統(tǒng)具有結(jié)構(gòu)緊湊成年无码av网站天堂网、反應(yīng)迅速、節(jié)油效果顯著的特點欧美激情视频二三区。

How to resolve the coupling problem between the air quality and the indoor thermal environment, especially how much fresh air can assure the indoor air quality, how to design control system to satisfy the need of fresh air, and how to track the change of the air quality in the civil air defence underground engineering at real time were studied thoroughly in this paper.

摘 要 本文就如何解決人防工程內(nèi)空氣品質(zhì)和工程內(nèi)熱濕環(huán)境的耦合性問題進行一定研究黄片aaav免费，尤其對人防地下工程需要多少新風量才能滿足工程內(nèi)空氣環(huán)境品質(zhì)；如何設(shè)計控制系統(tǒng)以滿足工程內(nèi)的新風需求亚洲涩图欧美；如何實時跟蹤工程內(nèi)空氣品質(zhì)的變化進行了深入研究色欲天天婬色婬香综。

Objective］ GC analytical method for butyl ether in the workplace air using sampling by charcoal tube was studied.

目的］ 研究炭管采集空氣中丁醚的氣相色譜分析方法。

The air motion in umbrella curtain spray combustion system for diesel engine was studied using numerical analysis with the emphasis on the evolution of in-cylinder flow field, the interactions between swirl and squish and the effects of combustion chamber configuration.

用數(shù)值分析方法研究柴油機傘簾噴霧燃燒系統(tǒng)中的空氣運動規(guī)律97社区精品视频在线观看，探討了缸內(nèi)流場的演變過程永久免费观看的毛片一区、渦流與擠流的相互作用和燃燒室結(jié)構(gòu)的影響，并比較了該燃燒系統(tǒng)與原機燃燒系統(tǒng)中的流場亚洲干批视频在线观看。

A large range of IRZ and intense fluctuating velocity area around the boundary of IRZ is measured and thought to be important to keep the excellent ignition and combustion characters of the new kind swirl burner. Together with temperature trace method, different structure and operation parameter of the burner are studied in this paper about their effects on turbulent and mixing characters of swirling jet. The structure variation includes different blade angle, use of central gear shape baffle, variable outer length and angle of lean primary air outlet, use of wedge outlet of lean primary air.

采用上述兩種測量方法并結(jié)合熱質(zhì)比擬溫度示蹤的方法free性欧美性xxxx，本文對徑向濃淡旋流煤粉燃燒器噴口結(jié)構(gòu)和氣流流動參數(shù)的變化對旋流流場的流動、混合欧美操人网站、湍流脈動特性的影響進行了深入研究安也去97人人操，研究了旋流葉片傾角大小、中心齒型擴錐激情影院福利、淡一次風擴口外伸長度和擴角的變化www.rihanav、淡一次風楔形擴口、直流二次風擴口角度的變化對出口旋轉(zhuǎn)射流流動特性的影響欧美黄色片久久，研究了一次風率和旋流二次風率運行參數(shù)變化的影響規(guī)律中文字幕制服丝袜第57页。

In this paper, air-conditioning products, reverse logistics model was studied.

本文對空調(diào)產(chǎn)品的逆向物流模式進行了研究。

So in this paper based on the characteristics and the optimum state theory of the vehicle, some kinds of control schemes are compared and discussed, and the fuzzy PID control scheme is adopted at last. The relation between air-cushion pressure and fan rotational speed on the optimum driving state is studied. The cushion pressure is used as controlled variable and the fan revolution is used as regulated variable. And transducer and fan motor are actuators.Based on the structure and operating properties of half-tracked air-cushion vehicle, the control system scheme and structure are presented. A control scheme using the self-tuning PID fuzzy logical controller is adopted. Fuzzy rules are set up and some researches have been done for fuzzy tuning method. At the same time the real-time measurement scheme by computer control is proposed, and electric circuits are designed. In the control system of half-tracked air-cushion vehicle cushion pressure P〓 is used as controlled variable and the fan speed n〓 as regulated variable.

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