brief abstract 中文意思是什麼
brief abstract
解釋
簡易文摘-
Abstract : brief introduction and canalization of the vibration and noise outoftolerance problems arisen during the prototype test for series yax, and the suggestion for the prevention to them are given in t his paper
文摘:本文簡要介紹了yax系列樣機試制中遇到的振動、噪聲超差問題，進行了原因分析，給出了擬採取的措施。 -
Abstract : with a view of time - varying characteristic of the v ibration signal measured on reciprocating machinery and a brief introduction to the wavelet analysis and a nonlinear wavelet denoising theory, the paper makes an approach, by taking an triplex pump widely used in heavy machinery as an exa mple, on the waveform feature extraction which reflects the various conditions o f reciprocating machinery with nonlinear wavelet denoising analysis method
文摘:針對往復機械振動信號的非平穩時變特點，本文在簡述小波分析及非線性小波消噪理論的基礎上，以重型機械使用的三缸泵為例，研究了用非線性小波消噪方法提取往復機械狀態下的波形特性。 -
Abstract : a brief description of the housing industry developments in china is given in the paper
文摘:對中國住宅產業化的發展作了簡要的介紹。 -
Excavation brief of han and tang tombs in the southern suburbs of xi ' an abstract
西安西郊棗園唐墓清理簡報 -
Abstract : the paper introduces the brief cases of gas jet pump used for oil and gas well artificial lift, expounds operating mechanism, advantage and limitation of gas jet pump, analyses the actual results and service conditions of gas jet pump used for dewatering gas production wells. the analysis result shows the gas jet pump technology have the advantage of gas lift technology, and have higher efficiency and better result than semi - enclosed gas lift. service conditions of gas jet pump is the same with semi - enclosed gas lift. so it is worth using widely
文摘:介紹國內外氣體射流泵用於油氣井人工舉升的簡況，闡述其作用機理、優點及局限性，分析用於排水采氣井的實際效果、應用條件；認為氣體射流泵工藝是具有氣舉工藝的優點，又比半閉式氣舉效率更高、效果更好，應積極推廣的工藝，因其應用條件與半閉式氣舉相同，故在氣舉井上作為接替工藝尤為簡便可行。 -
Abstract : in this paper, a brief introduction of distress process and reason for kuersik nuclear submarine is given, developing orientation is also presented according to requirement of three dimensional rescue and rescue vehicles actuality of the world
文摘:本文對庫爾斯克號核潛艇失事過程及原因作了簡要分析，從潛艇立體救生需求出發，根據國內外援潛救生設備的狀況，提出了立體援潛救生系統的發展思路。 -
Abstract : approximate methods for calculating aerodynamic heating rates on space shuttles are discussed. various methods are given for predicting the heating rate at axisymmetric stagnation points, general three dimensional stagnationpoints and the leading edge stagnation point of wings. numerous laminar and turbulent heating techniques for flat plates and cones are analyzed and compared. a brief review of some methods is presented to predict heating rate for winward centerline and lateral direction off the symmetry plane. the results show that the methods are simpler and can guarantee enought precision for predicting aerodynamic heating environment of space shuttles
文摘:介紹了國內外預測航天飛機氣動加熱的工程計算方法.給出了軸對稱、非軸對稱和機翼前緣等各種外形駐點熱流密度的計算，分析和比較了平板、錐體的層流和湍流熱流密度計算的各種方法，概述了航天飛機迎風面中心線和離開中心線橫向熱流密度的計算.計算結果表明，本文方法用在航天飛機氣動熱環境初步設計中比較簡單並且有足夠精度 -
Abstract : a brief introduction to scientific research in the three gorges project ( tgp ) and the applications of research achievements is given, which include treatment of newly slited layer on the foundation of the first stage earth - rock cofferdam, dumping bottom technique of river closure in deep water, construction of cut - off walls in the second stage earth - rock cofferdams, 3 - d computer simulation of river closure, concrete casting alternatives and selection of major construction equipment for the second stage construction optimization of durability of raw materials of concrete, deep sliding resistance and stability of the intake dam section, the section of the intake of the power station, the intake penstock of the power station, layout and hydraulics problems of shiplocks, stability of high slopes of shiplocks, and optimization of the system structural anchor bars to reduce the risk of cracking in the concrete wall and 700mw turbine generator units
文摘:介紹三峽工程的科研項目，綜述三峽工程開工以來的主要科研成果及工程應用情況，包括：一期土石圍堰基礎處理與施工技術；大江截流上下游土石圍堰平拋墊底研究；二期圍堰防滲工程研究；大江截流計算機科學管理；大壩混凝土澆築方案及主要施工機械選型；混凝土的原材料和耐久性優化試驗研究；大壩基礎深層抗滑穩定研究；三峽電站進水口型式研究；鋼襯鋼筋混凝土引水管道研究；蝸殼打壓、廠壩間伸縮節問題研究；永久船閘的引航道布置、輸水系統及水力學、高邊坡穩定、混凝土襯砌墻的結構與支護研究；特大型水輪發電機組的科學研究。 -
Abstract : beginning form the brief analysis on the drawbacks of traditional ideas in bidding planning and the gap between objectives and conditions, this paper attempts to reconstruct the designing process and the optimal pattern of objectives in bidding planning with logical and system atic methods
文摘:作者從簡析投標規劃傳統思路的缺陷規劃目標與條件間的裂點入手，以邏輯重構和系統觀點重建了投標規劃的設計過程和目標優化模式。 -
Abstract : this article outlines the recent status and characteristics of the telecom service development in china ; describes the background against which the new generation voice network has emerged and its characteristics and structure ; discusses the development trend of the new generation network technology and finally gives a brief introduction to the developments in network standard research in china
摘要：概述了我國電信業務在近期的發展狀況及其發展特點；論述了新一代話音網路產生的背景、網路特點及結構；進而討論了新一代網路技術的發展趨勢；最後對我國網路標準的研究動向作了簡單的介紹。 -
Abstract : a brief introduction on the development of metal function almaterials and the trend in the lastest research and development is given, including the research and development at home and abroad, such as nanocrystalline material, bulk amorphous alloy, magnetic shape memory alloy, vaccum quenched material, etc
文摘:簡述了金屬功能材料的發展概況，對近期研究開發的新動向進行了簡介，包括國內外研究發展和作者本單位的工作，如納米晶材料、大塊非晶態合金、磁性形狀記憶合金、真空快淬材料等。 -
Abstract : something about swedish coastal and marine environment administrations is introduced in brief, including administrational regime of the country, especially its means and experience in oil pollution prevention measures as well as oil spill surveillance, cleanup and recovery
文摘:簡要介紹了瑞典海岸與海洋環境管理機構的情況，包括國家的管理體制，尤其是在油污防備與反應以及海面溢油監視、清理和回收方面的做法和經驗。 -
Abstract : in this review, we describe the characteristics of biocatalysts, especially their regioselectivity and stereoselectivity. a brief introduction of their application s in different kinds of reactions was also given with the purpose of encouraging their further use in organic synthesis
文摘:本文綜述了生物催化劑的類型及特徵，特別是它與化學催化劑相比具有顯著的特點：高效性和專一性；介紹了生物催化劑在不同有機反應中的應用，旨在鼓勵更多的化學工程者使用生物催化劑，使它們在未來的有機合成領域中發揮越來越大的作用。 -
A stuty on the visual performance moniting and analysis system of diesel engine for marine use abstract : on the basis of a brief analysis of the present state of diesel engine performance moniting and analysis system for marine use, this paper put forward a new visual performance moniting and analysis system
本文簡單分析了船用柴油機性能監測與分析系統的現狀，提出一個集柴油機性能試驗和實船監測於一體、從廠家到船舶跟隨機器、兼顧性能測試和技術狀態評估、提供數據輸出介面的可視船用柴油機性能監測與分析系統。 -
Abstract : lining etching mechanism in smelting and main factors affecting lining life are expounded by dissecting low carbon fecr furnace lining and testing samples, and some brief views of prolonging lining life are also pointed out
文摘:通過微碳鉻鐵電爐爐襯的解剖和取樣檢測，論述了冶煉過程中爐襯的侵蝕機理及影響爐襯壽命的主要因素，並指出了延長爐襯壽命的幾點簡要看法。 -
Abstract : based on the brief introduction of the ohgin, distribution and the collection and conservation of the germplasm resources of apricot, mainly on the variety classification, pollination biology, evaluation of palynology and molecular biology, the genetic and variation characters of hybrid progeny, breeding objectives and technique were reviewed. some research programmes needed to be studied in this field in the future were suggested
文摘:在簡要介紹杏的起源、分佈及種質資源收集保存的基礎上，著重對杏品種資源的分類、授粉生物學、孢粉學及分子生物學評價以及杏雜種後代遺傳變異特點、育種目標及育種技術進行了綜述，並提出了今後的研究方向。 -
Abstract : tobacco mosaic virus plays an very important role in the discovery of virus and several pioneers made contributions to the developmental process of virology, through which the brief history of discovery of virus can be traced
文摘:煙草花葉病病毒在病毒的發現中有著極其重要的地位，幾位病毒學研究的先驅在這方面的研究有極大的貢獻，以此為線索可以看到病毒被發現的簡要歷史。 -
Abstract : based on a brief introduction of storage and transport of bulk liquid dangerous goods in shanghai port, problems about pollution prevention existed in terminal handling are analyzed and it ' s presented that the “ three passes " is an effective measure to prevent pollution
文摘:在簡要介紹了上海港散裝液體危險貨物儲運作業發展的基礎上，分析了碼頭裝卸作業中存在的防污染問題，提出了「三道防線」是防止污染的有效措施。 -
Abstract : one of the unsolved problems of the high power application of high temperature superconductors is how to lower the energy dissipation induced by flux motion. due to the extremely high anisotropy, small coherence length and weak pinning potential, the mixed state phase diagram which is tightly related to the flux dynamics becomes very complicated. a brief account is given of the field induced crossover of criticalities of energy dissipation, which has been observed in our recent sensitive electromagnetic measurement
文摘:高溫超導體在強電方面應用的關鍵問題是如何克服磁通運動所造成的能量損耗.由於存在極強的各向異性、短的相干長度和小的磁通釘扎勢，因此與磁通運動緊密相關的混合態相圖變得很復雜.文章綜述了根據一系列靈敏的電磁測量所觀察到的磁場誘導的能量耗散行為的轉變 -
Abstract : a brief summary of the history 、 status and utility of gas - engine - driven air - conditioner is introduced in this paper
文摘:介紹了煤氣發動機驅動的空調製冷裝置的發展歷史、現狀及其在各個方面的應用和特點等。
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