main nozzle 中文意思是什麼
main nozzle
解釋
主噴嘴-
The nozzle flow is composed of the main gas stream and the secondary air stream in order to simulate the nozzle of turbofan engine
噴管中的氣流由主流燃氣和次流空氣組成，用以模擬渦扇發動機的噴管。 -
At higher speeds, a larger amount of fuel tends to be discharged from the main nozzle.
在較高轉速時。主噴嘴會噴出大量的燃油。 -
The main achievements are summarized as follows : ( i ) the m8 nozzle contour is designed by the characteristic line and the bound layer correction. based on the m7 nozzle, the m8 nozzle is designed by throat approximation
全文取得了如下成果: （一）用特徵線加附面層修正的方法設計了m8型面噴管，並在m8噴管的基礎上採用喉道擬合的方法生成m7噴管。 -
The main achievements are as follows : 1 it ' s for the first time to extensively investigate effects of main combustion system parameters such as plunger diameter, plunger stroke, fuel delivery advanced angle, valve opening pressure of nozzle on performance of dme engine. the parameters are optimized
取得的主要成果有： 1系統地研究了油泵柱塞直徑和行程、供油提前角、噴嘴啟噴壓力等發動機燃燒系統主要參數對二甲醚發動機性能的影響，優化了這些參數。 -
The main work embodied as follows. ( 1 ) model a biowhig / suction type boundary for synthetic jet actuator, it considers the actuator cavity, exit nozzle and exterior flow field as a single computational region
（ 2 ）本文的主要工作之一是基於建立的激勵器簡化模型對合成射流流場進行二維、三維數值分析以探討合成射流流動機理。 -
These variable geometry components include high pressure - compressor, high - pressure turbine, low - pressure turbine, inlet area ratio of mixer and main nozzle throat area. the results of calculation show that the adjusting of low - pressure turbine and mixer has a remarkable effect on the performance of engine and bypass ratio
計算結果表明，低壓渦輪和混合器的調節對發動機的性能和涵道比的影響尤為顯著；在其它部件幾何結構不同時，單個部件幾何調節后，發動機性能的變化趨勢是不同的。 -
Flow details of measurement indicate that the coupling of periodic separated flow ( such as low frequency swinging of separation line ) with nozzle flow may cause aft - end internal flow unsteady. recirculation flow gains more energy from the main flow, at the same time the turbulence intensity increases
通過對測量結果的分析，我們認為分離流動的周期性（如分離線的低頻擺動）與噴管流動相耦合，會造成燃燒室尾部流動的非穩態效應增強，增加了迴流區從主流中獲得的能量，也加劇了流場的湍流脈動。 -
On the basis of all these, the paper researches that the soil moisture content reduces slowly after 7 days ， so establishes a main criterion of evaluating watering feature - the increment of average soil water content in 7 15 days. according to these theories, we draw an conclusion - water is injected at the position away from seed zone 3. 5 ( cm ), 6 ( cm ) deep with vertical flat nozzle, the effect of watering is better at the operation speed of 0. 9m / s
得出7天後土壤含水量呈緩慢變化的趨勢，進而提出了以7 15天平均土壤含水量與初始含水量的差值作為評價坐水性能的指標，以此為依據得出在機組作業速度由0 . 5m / s增加到0 . 9m / s的情況下，採用豎扁（不帶翅）施水管將所需的水施到種子帶橫斷面內3 . 5cm ，深6cm的位置，坐水效果較為理想。 -
Engineering drawing system can draw two dimension curve graphs, main detail drawing and assembly drawing. the curve of internal trajectory and dynamic simulation of particle external trajectory. the detail drawing includes the graph of chamber, grain design, connection body, nozzle, some standard part
工程繪圖可以繪制二維曲線圖和零部件圖，其中二維曲線包括有內彈道壓（推）力?時間曲線、質點外彈道動態模擬曲線；零部件圖包括有標準螺栓與螺紋孔、燃燒室結構圖、裝藥設計截面圖、連接底結構圖、噴管結構圖及火箭發動機總體裝配圖。 -
The effect of secondary fuel nozzle location, the mass flow rate of secondary fuel and outlet area of ejectorjet were studied. the main results are : the geometry structure of ejectorjet can be compatible with other rbcc operation modes by secondary combustion organization ; the distribution of secondary fuel on ejectorjet cross section is significant for secondary combustion stability. spi combustion organization method is promising
實驗研究了二次燃料噴注位置、二次燃料噴注量、后體出口面積對引射火箭性能的影響，得到的結論為：通過燃燒組織，引射火箭模態可以和其他工作模態（亞燃超燃）共用燃燒室而不需做大的幾何變化；二次燃料在引射火箭通道截面上的分佈對于引射火箭的穩定工作有重要意義。 -
Large water flow by the main pump. allows very low nozzle pressure and achieve no pilling, no
分開來，可輕易獲得壓力很低，但水量很大的柔 -
In this dissertation, the author summed up the muti - technique in fluid dynamics, heat and mass transferring, mechanical designing and computational technique and studied the conventional pressure spray dryers with different air disperse structure and outlet equipment, at last put forward the theme i. e. the study on combined spin - flow pressure spray drying technology, the main contents were as follows : ( 1 ) the combined spin - flow pressure nozzle was designed whose novel structure has no report at present, and the structural designing parameters were obtained through analyzing the physical characteristic of materials and distribution of particles
本文總結了國內外在壓力噴霧乾燥裝置的研究應用狀況，並分析了現有噴霧乾燥裝置設計方面的優缺點，運用流體力學、空氣動力學、傳熱傳質學、機械設計和計算機技術等多學科知識，綜合研究了傳統壓力噴霧乾燥系統的單噴嘴霧化裝置在併流、逆流以及混流乾燥中的應用和噴霧乾燥塔的不同布風裝置以及出風裝置的設置情況等，提出了新型旋流式組合壓力噴霧乾燥技術並對此進行了研究，其主要內容包括： （ 1 ）本文創造性地設計出旋流式組合壓力噴嘴的基本結構，並通過對料液的物化特性研究分析以及顆粒度的分佈要求，給出了噴嘴的不同結構設計參數。 -
Investigation and analysis of a serious accident caused by break of main fuel nozzle
對一起主噴嘴斷裂導致嚴重事故的調查和分析 -
The main works and contribution of this paper are as follows : 1. central type finite volume method proposed by jameson a. is investigated and the boundary condition of the method is improved. compared with the testing data it is proved that the program for 3d viscosity steady flow in thrust vectoring nozzle developed is correct and reasonable
研究了jamson提出了中心型有限體積法，並改進了其在邊界上的處理，通過驗證計算驗證了本文發展的矢量噴管三維有粘流動計算程序的正確性。 -
These measures are as follows : shorten the primary wind intervals to improve thermal load of the burner ; reduce the size of hypothetical circle of contact to prevent the flame from splashing ; use nozzles with larger height / width ratio to increase the effusive rigidity, so as to increase the jet flow depth of secondary wind into the main jet flow ; use a higher primary wind velocity to increase its jet flow rigidity ; use a special flame holder structure of the primary nozzle, so as to improve
這些技術措施主要有:縮小一次風間距以提高燃燒器區域熱負荷;縮小假想切圓防止火焰刷墻;採用高寬比較大的二次風噴口以增加射流剛性，提高二次風射流進入主射流的深度;採用較高的一次風速來提高一次風射流剛性;一次風噴口採用特殊穩燃結構;提高下二次風的托粉能力。 -
Greater temperature gradient and higher thermal stress were the main reason that caused the failure of the exit surface of the cws ceramic nozzle
根據對陶瓷水煤漿噴嘴磨損形貌、溫度分佈和熱應力的分析，得出陶瓷水煤漿噴嘴出口處較大的溫度梯度和熱應力是導致其出現破損和脫落的主要原因。
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