模孔出口角 的英文怎麼說
中文拼音 [mókǒngchūkǒujiǎo]
模孔出口角
英文
die back-
Simulation results show that better atomization can be realized by enhancing the cavitation intensity via increasing the injection pressure difference or decreasing the nozzle inlet round angle - radius ratio
通過模擬計算可知，提高噴射壓差和減小噴孔入口圓角半徑都可以提高空穴強度，同時也發現提高噴孔長徑比可以使空穴在噴孔出口截面上分佈更為均勻。The main context of this paper is improving the precision of the disseminator. through analyzing the motion and construction parameter, making sure of the factor of working property, the motion equations of seed were established, and then the mathematical patter of main parameters were established. using of vb, we compiled procedure to simulate the motion of seed in the working process, finding the main factor that affect on the working property of the disseminator, then optimal designing of parameters of the device was laid
通過對排種輪的充種極限速度、清種始角、護種始角、排種器的投種口尺寸、型孔的尺寸等運動參數和結構參數進行分析，總體了解排種器結構參數和運動參數對其工作性能的影響，建立種子的運動方程，進而建立各主要參數（充種速度、清種角、護種角等）的數學模型，運用計算機輔助分析（ caa ）方法，通過visualbasic編製程序，對排種器工作過程中種子的運動進行動態模擬，找出影響排種器工作性能的主要因素，並對其參數進行優化，為合理地優化設計奠定了基礎。Detailed predictions on the fluid flow in mold and in cavity of nozzle working end were obtained at different side - hole angle and submerged depth of nozzles, and then the flux variation of liquid steel passing through central hole of the three - hole nozzle and the fluctuation of liquid steel in mold were inspected based on above predictions
針對3孔浸入式水口不同側孔傾角和浸入深度，數值模擬對結晶器內鋼水流動做出了較為詳細的預報，研究工作就此分別考察了水口中心孔流量變化和鋼水液面波動幅度。Some valuable conclusions are summarized by theoretical analysis and simulation experiments : from the side of signal processing, pulse jamming can be deleted by the method of time - domain sliding window accumulation and can be restored by interpolative prediction. ; gauss white nose can be attenuated while jamming disperse point - target by the method of time - frequency analysis in time - frequency domain. ; radio frequency noise jamming can be deleted by the method of average range frequency spectrum and notching in frequency domain
通過大量的理論分析和模擬實驗，得到了一批具有一定價值的結論：從信號處理的角度出發，對于脈沖式干擾，能夠運用時域滑動窗口積累的方法去掉，並且通過預測插值得到較好的恢復；對于高斯白噪聲干擾，在時頻變換域內應用時頻分析方法可減小其對分散點目標的干擾；對于射頻噪聲，通過平均距離頻頻法和頻域陷波的方法可以去掉；從改變合成孔徑雷達系統角度出發，類似雙基地雷達能夠避免各種干擾，對發射信號進行調幅，調相以及改變調頻斜率都是較好的抗干擾方法。Die exit angle
模孔出口角Die relief angle
模孔出口角Then on one hand, author makes researches of anti - jamming against pulse jamming 、 gauss white noise jamming and radio frequency noise jamming from the side of signal processing. author exercises much signal processing knowledge of time - domain sliding window accumulation 、 wavelet analysis 、 time - frequency analysis and linear prediction and carries out many simulation experiments. on the other hand, author proposes the anti - jamming methods of using a sar similar to double - base radar and modulating the amplitude 、 the phase of emission signal and changing the frequency modulation slope from the side of changing sar system model
作者首先提出了合成孔徑雷達抗干擾的定義、分類以及評價抗干擾方法好壞的主客觀標準；然後，一方面從信號處理的角度出發對脈沖式干擾、高斯白噪聲干擾以及射頻噪聲干擾進行了抗干擾研究，其中運用了時域滑動窗口積累，小波分析，時頻分析以及線性預測等信號處理知識，做了大量的模擬實驗；另一方面，本文基於改變合成孔徑雷達系統模式提出了利用類似雙基地雷達來抗干擾，以及對發射信號進行調幅、調相以及改變調頻斜率來抗干擾，同樣做了相應的模擬實驗。分享友人