星型接法 的英文怎麼說
中文拼音 [xīngxíngjiēfǎ]
星型接法
英文
wye connection-
Materials and methods : fecal, cloacal and tracheal swabs from different types of poultry were collected in 6 live - bird retail markets once a week. they were inoculated into 9 - 11 days embryonated chicken eggs and incubated in 35 " c for 72 hours. hi and nl assays were performed to detect the subtype of viruses if ha test were positive ( ad ^ 16 ) and contamination test were negative
材料和方法：每星期收集一次標本，收集的標本常規處理， 9 - 11日齡雞胚尿囊腔接種， 35培養72小時，收取尿囊液，血凝陽性（ ad 16 ）且細菌培養陰性者- 70保存並進一步做hi ， ni實驗鑒定亞型。It contributes to the deeper comprehesion of these probability distributions, affords more detailed theoretical basis for further studying and simulating satellite mobile channels, ? theoretical analyses and discussions of the models which are often used in the study of the propagating characteristics of satallite mobile channels are given ; meantime, some discussions on the work of model simulations are also given, ? incorrect derivation of the equality between c. loo model and corazza model in some other papers is pointed out. via the conception of received power, we derivate that in the rural environments these two models really have the equal relationship by the way of theoretical derivation and simulatant fittings. therefore, it is able to use corazza model in studying the characteristics of satellite mobile channels in the rural environments and able to avoid the iterant work of modeling, in order to enhance the efficiency and accuracy of research work, ? detailed processes of simulating lutz model by using matlab6. 0 _ simulink4. 0 and the results of comparisions are given
本文包含有以下的主要內容： ?對衛星移動通信通道傳播特性研究中常用的三個概率分佈給出了詳細的推導過程；以便對這幾個在衛星移動通信通道傳播特性的研究中常用的概率分佈函數有更深的理解，對進一步研究衛星移動通信通道傳播特性和對通道的建模提供了更為詳盡的理論基礎； ?對衛星移動通信通道傳播特性的研究中常用的通道模型進行了理論上的分析和討論，並對衛星移動通信通道建模的研究工作提出了一定的看法； ?指出了以前的文獻中關于c . loo模型和corazza模型的等同性的證明錯誤；並從接收信號功率的角度出發，通過理論推導及模擬曲線擬合重新證明了在鄉村環境下，這兩個模型的確是具有等同性的；從而在對鄉村環境下的衛星移動通信通道傳播特性進行研究時，可以只採用corazza模型來對實際的通道進行建模，這樣可以避免重復的建模工作並提高研究工作的效率和準確性； ?給出了lutz模型在matlab6 . 0 _ simulink4 . 0環境下的軟體模擬實現的詳細過程和整體模擬測試的對比結果，保證了該模型在硬體實現時的可靠性和可行性，從而可以將它們應用於指導模型的硬體模擬實現並可以降低硬體實現時的風險。By the simulation, it is indicated that the curve motion model based on the particle can describe the curve motion of the target. and it is shown that the performance of the ukf algorithm is more precise than the tradition nonlinear filtering technique. by the contrast between the simulation results and the positioning result of commercial data process software,
模擬結果表明，基於質點的曲線運動模型可較準確地描述進行曲線運動的載體; ukf演算法作為衛星導航系統的非線性濾波技術，較之傳統的線性濾波技術可獲得較高的定位精度;其定位結果與商業數據處理軟體相比，可滿足定位精度要求，該演算法可以直接應用於衛星導航系統的軟體實現。After designing oil ditches on the surface of its arc - block, increase friction factor and make sure self - lock which solves above problem. do qualitative analysis to lower pair and one - way overrunning clutch and inner star - wheel - roller overrunning clutch by using self - made lever loader. the experiment shows : on the same condition, the deformation of new overrunning clutch ’ s surface contact with lower pair is smaller than the deformation of roller overrunning clutch ’ s line contact with higher pair and new overrunning clutch ’ s skid angle is smaller
對低副單向超越離合器的部件進行了加工製造，在超越離合器弧塊表面創新設計加工排油溝，增大摩擦系數，保證實現自鎖，解決了很多離合器工作過程中容易出現無法自鎖的問題;對低副單向超越離合器和內星輪滾柱超越離合器用自製杠桿加載器做了定性分析，實驗表明:相同條件下，新型離合器低副面接觸比滾柱離合器高副線接觸變形小、溜滑角小。For the digital modulation recognizer, the blind identification and equalization algorithm based on second - order statistics is applied to equalize the received signals firstly, and then the modulation type used can be figured out according to the shape of the rebuilt constellation
對于數字調制方式，本文首先採用基於二階統計量的通道盲均衡演算法對接收信號進行均衡，再利用信號星座圖的形狀判別具體的調制類型。Method of force bearing analysis and finite element analysis on contacting state of tooth surface for new typed fa planetary transmission of cycloidal needle - wheel
新型擺線針輪行星傳動受力分析方法與齒面接觸狀態有限元分析New telescopes and techniques have found other exoplanets directly, by sensing a slight fading in the luminosity of the star as the planet crosses its face
新型天文望遠鏡和技術幫助人類用直接的手段發現了其他的外星行星，方法就是通過測量行星穿過恆星表面時恆星亮度的細微變暗的程度。In a recent interview with france - s le monde newspaper, he said star wars and its good - against - evil storyline has become a simplistic prototype for today - s blockbuster
貝斯肯德在最近接納法國《世界報》采訪時說，星球大戰的戰役和它正邪抗爭的故事小說文學情節已經成為了一種什麼樣的過分超量簡化的模型，被今天的精彩大片影片廣泛採用。分享友人