高頻熱解 的英文怎麼說
中文拼音 [gāobīnrèjiě]
高頻熱解
英文
high-frequency pyrolysis-
And the results of calculation and numerical simulation indicate, without increasing the intrinsic collector - junction area of power devices, collector - combed structure helps to raise the intrinsic heat - dissipating area and base ' s perimeter, improve heat - dissipating method of each cell of the chip, enhance the distribution uniformity of junction temperature and current of each cell of the chip, reduce the thermal resistance and raise the dissipation power pd and output power p0, fairly well relax the contradiction among frequency, out - put power and dissipation power of the devices, and further improve the devices " property against second breakdown
而計算分析和二維數值模擬分析結果表明：梳狀集電結（基區）結構在不增加器件本徵集電結面積的條件下，增大了器件的本徵散熱面積和基區周長，改進了每個子器件單元內的散熱方式，提高了單元內結溫和電流分佈的均勻性，降低了器件的熱阻，增大了器件的耗散功率和輸出功率，較好地緩解了目前傳統結構中頻率與功率、功耗的矛盾，並有利於改善器件抗二次擊穿的性能。At present, people usually use birefrigence and quasi - phase - matching methods to achieve higher effiency in the process of conversion. a significant advantage of quasi - phase - matching method is that the interaction is occurred through the largest element of the x ( 2 ) tensor ; the period of optical superlattice can be designed randomly, and any interaction can be matched without walk - off angle ; they are fitted to be used in frequency conversion of lower power especially. the quasi - phase - matching method has some advantages over birefrigence method, improving the efficiency of frequency conversion ; the range of frequency conversion covers its whole transperant wavelength
由於準相位匹配技術有其獨特的優勢，可以利用非線性光學晶體的最大二階極化張量，如ppln 、 pplt 、 ppktp用的非線性極化張量都是d _ （ 33 ） ，其有效非線性系數高出普通非線性光學介質（如bbo 、 lbo 、 ktp ）一個數量級，而且可以人為靈活設計調制周期，通過周期設計其頻率變換范圍可以覆蓋準相位匹配介質的整個透明波段，選擇無走離效應，解決了常規pm難以解決的問題，拓寬了非線性晶體的應用范圍，極大地提高了頻率轉換效率，已成為非線性光學材料和固體激光器的研究熱點之一。The future wireless mobile communication systems are expected to provide ubiquitous, high - quality, and high - rate mobile multimedia transmission. however, hostile multipath fading radio conditions give rise to serious inter - symbol interference ( isi ) ; even worse, wireless channel are often time varying, which makes the system more vulnerable and more difficult to track the channel state. orthogonal frequency dvision multiplexing ( ofdm ), which is inherently resistant against isi, has invoked a popular research interest in recent years, and has been a promising candidate technology of the physical layer for future weideband high - date - rate wireless communications. notwithstanding, ofdm is much more vulnerable to errors of both time and frequency synchronization and to that of channel estimation, and how to obtain correct timing and channel estimation efficiently is highly critical to ofdm systems. the dissertation will focus on both of the aspects of ofdm systems mentioned above
但是無線環境的多徑特性造成通信系統中嚴重的符號間干擾，同時無線通道的時變性使得通道特性跟蹤復雜。而正交頻分復用技術（ orthogonalfrequencydivisionmultiplexing ， ofdm ）正是一種解決符號間干擾的有效傳輸手段，因此ofdm技術作為未來寬帶高速率無線通信的物理層候選技術在當前引起了一股研究熱潮。但ofdm系統對定時同步誤差和通道估計誤差非常敏感，如何在ofdm系統中準確快速地實現符號同步和通道估計是至關重要的，本論文將重點針對這兩個問題進行討論。Then i finish the analysis from three aspects, instruction of circuit, stress of surrounding, and tolerance, thus providing basis of design. the following designs are in progress from four aspects, which are circuit design, thermal design, derating using and screening. at last, i make the update generator in batch process, and collect and analyze reliability dates again
首先進行了與可靠性相關的數據收集與分析，對故障模式進行統計；然後從電路結構、環境應力及容差三個方面進行可靠性分析，從而為關鍵的可靠性設計提供了依據；接下來的可靠性設計，從電路設計、熱設計、降額使用、篩選四個方面逐一解決了可靠性分析階段發現的問題；最後，我將改良的發生器批量生產，並從中重新收集了可靠性數據進行計算，事實證明改良后高頻無極燈的平均壽命已達到6萬小時。At present, in studying and developing heavy capacities and parallel resonant inverter, it is expected to solve the problems of researching on simple structure and easy to start frequently series resonant inverter in the fields of domestic high frequency induction heating installation. therefore, researching of the subject is to design and study a high frequency ( more than 1 mhz ) and high power topological structures of full solid - state induction heating power supply
目前在研究和開發大容量的並聯逆變中頻電源的同時，研製結構簡單，易於頻繁起動的串聯逆變高頻電源是國內高頻感應裝置領域有待解決的問題，基於此種需要，本課題主要研究設計一種高頻（ 1mhz以上）大功率全固態感應加熱電源逆變電路的拓撲結構。The safety installation of the automobile bumpproof is a very hot topic nowadays, and it is also one of the most important part of intellectual traffic. we use the compound radar and fm coding technology, choose the unique route to produce and develop the expressway automobile bumpproof and alarming installation, which solve the " false alarming " problem that occurs while b eing interrupted in the complicated traffic conditions
汽車防撞安全裝置是當今世界的熱門話題，是智能交通的重要組成部分，我公司開發生產的高速公路汽車防撞報警裝置採用復合雷達和調頻編碼技術，選擇獨特的技術路線，解決了復雜交通環境下因干擾而產生的"虛警"而且作用距離遠，反應速度快，可靠性高。This paper introduces a method of taking the first truly seawater heating source pump system to solve the problems of high thermal conductivity and frequently on - and - off going in operation process by frequent irrigation projects
本工程實例是青島市第一個真正意義上的海水源熱泵系統，工程中採用頻繁沖洗的方法解決熱泵機組對水質的要求較高，調試、運行過程中頻繁停機的問題以及採用黃夾克保溫的方法解決乙二醇溶液熱傳導系數較高，熱量損失的問題。Recently, multi - channel real - time surveillant system has become a developing hotspot. considering the updated video - compression technology and high performance pc processor, the development of a multi - channel real - time surveillant system, which is based on hardware compression and software decompression, has great appeals due to its high generality
近年來，多路實時監控系統成為監控領域的一個新的開發熱點，利用當前視頻壓縮的最新技術以及計算機處理器的高性能，開發基於硬體壓縮、軟體解壓的多路實時監控系統具有很大的通用性。分享友人