衰變源 的英文怎麼說

中文拼音 [shuāibiànyuán]
衰變源 英文
decayed source
  • 衰 : 衰動詞（衰弱） decline; wane
  • 源 : 名詞1. （水流起頭的地方） source （of a river）; fountainhead 2. （來源） source; cause 3. （姓氏） a surname
  1. Leyva f, anker sd, godsland if, et al. uric acid in chronic heart failure : a marker of chronic inflammation. eur heart j, 1998, 19 : 1814

    楊麗霞，祝善俊，王先梅，等.心力衰竭患者細胞因子網路及內源性調控的變化.中華內科雜志， 2001 ， 40 （ 10 ） : 660
  2. This paper aims to explore systematically some scientific principles of resource - based cities from their formation and development to contabescence or transformation in the context of theories of resource life cycle and sustainable development. it also discusses the scientific issues of connotation, models and transformation mechanism of resource - based cities, makes an integrated assessment on their sustainable and renewable capiabilities of those cities and brings out several measures and policies for the transformation of resource - based cities in china

    本論文的研究目的是從資源生命周期理論、可持續發展理論等出發，系統地分析總結資源型城市從形成、發展到衰亡或轉型的整個過程中的科學規律，探索資源型城市功能變化機制的科學問題，科學界定資源型城市內涵和發展或轉型模式，綜合評定資源型城市可持續發展和再生能力，探索我國資源型城市功能轉型機制和發展模式以及各種途徑與對策。
  3. Fibre optic interconnecting devices and passive components - basic test and measurement procedures - examinations and measurements - attenuation of random mated connectors

    光纖互連設備和無源元件.基本試驗和測量程序.檢驗和測量.隨機配合連接器的衰變
  4. There are a lot of categories of the small business enterprise gathering cluster, in the united states, italy, switzerland, japan, china etc. the small business enterprise gathering cluster that stride over several industries section can adapt variety and resist the decay of economic period

    這些中小企業集群的具體作用體現在：能夠使有限資源高效聚集起來，以滿足城市與地區經濟發展；中小企業集群政策可以為實現產業目標和重振產業服務；跨越多個產業部門的中小企業集群能更好地適應變化和抵抗經濟周期中的衰退。
  5. When the neutron decay constant is measured in the zero power assembly, the dt external neutron measurement system ( scintillator photomultiplier tube detector st - pmt ) may provide trigger - signal and time correlationship

    摘要在零功率堆上進行了衰變常數測量實驗中，建立外中子源dt中子測量系統可以為物理診斷系統提供觸發信號和時間關聯信號。
  6. In this review three approaches in study of the effects of cytokinins on plant senecence are presented : the analysis of endogenous cytokinins during senescence ; the application of exogenous cytokinins ; and the research on transgenic plants with cytokinin biosynthesis or biodegradation genes

    主要從3個方面綜述了細胞分裂素與植物衰老之間的關系，即： （ 1 ）植物衰老過程中內源細胞分裂素含量變化： （ 2 ）外源細胞分裂素的影響： （ 3 ）轉入與細胞分裂素的合成、降解相關的從因對植物衰老產生的影響。
  7. 3. the new microwave power supply ( mps ) can work in vacuum and its power measurement is convenient. the output power could be adjusted with the change of control voltage, and the reflecting power could be gotten by measuring the output voltage of attenuator and detector

    （ 3 ）可在真空下穩定工作的新型微波源功率的測量較為方便，通過改變控制電壓的大小可以調節輸出功率，通過測量衰減檢波器的輸出電壓信號可實現反射功率的測量。
  8. Nuclear energy - measurement of radioactivity in the enviromment - air - radon 222 and its short - life decay products in the atmospheric environment : their origins and measuring methods

    核能.環境中放射性的測量.空氣.在大氣環境中氡222和其短壽命衰變產物:它們的來源和測量方法
  9. Like galileo, cassini is powered by the natural decay of the radioactive element plutonium, which generates heat that is then converted to electricity

    如同伽利略號，卡西尼號的能源來自放射性元素鈽的自然衰變，產生熱后再轉換成電。
  10. ( c ) land natural productivity increase from 7843 kg / ( hm2 - a ) to 17335 kg / ( hm2 - a ) relate to altitude closely, and the mean rate of enhancing yield is 23. 53 percent in this region with annual enhancing - rate of 0. 64 percent in last 15 years. ( d ) there are many facters that have been influe ncing soil effective coefficient that ' s soil organic matter, total nitrogen, effective phosphine and soil texture in turn. in a word, attenuation cause of land productivity is the result of water and soil. ( e ) the forestland potential productivity change from 3986 kg / hm2 to 15034 kg / hm2, but it has a high distinction between southern aera and north area in yaan city. ( f ) the grassland potential productivity increase from 4085 kg / ( hm2 - a ) to 16973 kg / ( hm2 - a ), but it has a high classification of potential productivity, ( g ) ditribution map was formed of potential land productivity. ( h ) it could be act as decision support for agriculture development, national land planning and ecotop constructive, etc

    5 、土地自然生產潛力水平的主要土壤限制因素為有機質、全氮，其次為速效磷和土壤質地；區域潛在生產力差異的制約因素，主要為土壤，次為水分，水、土兩項衰減合計為45 . 99 ，石棉、漢源兩縣水、土衰減達到60左右。 6 、林地潛力在3986 15034kg / hm ~ 2之間，高等級林地比重小，以大相嶺為界，北部的各縣林地生產力水平高，南部的兩縣林地生產力水平較低。 7 、天然草地生產潛力水平高，潛力在16973 4085kg / （ hm ~ 2 ? a ）之間，以高產的一、二、三級草地為主，且近10年來該比例變化不大。
  11. 2 ) the effects on waves conversion are stronger in rocks with dry fractures than that in rocks with water - filled fractures, and s - waves attenuate more rapidly in rocks with water - filled fractures. 3 ) the explosive point source which locates in anisotropic media can excites not only p - waves but also s - waves. 4 ) the properties of waves propagation were discussed and compared for several point sources with different source functions

    結果表明： 1 ）平行排列裂縫造成的各向異性使波前變寬； 2 ）含乾裂縫巖石對波型轉化的影響比含充水裂縫巖石的大，橫波在含充水裂紋中傳播時衰減較快； 3 ）當介質存在各向異性時，爆炸點源產生的波不僅有縱波，還有橫波； 4 ）通過改變點源函數研究不同點源所產生波以及波型的轉換。
  12. ( 3 ) for the wireless channels subject to several types of fading existing in different time scales, the dynamics of channel conditions are decoupled into two random processes with different mathematic properties in different time scales. two algorithms in this scheme are proposed to dealing with each time scale : the resource optimizer allocates the resource to maximize the total revenue with price fairness and provide qos guarantees to applications, and the slot scheduler exploits the time variability of

    （ 3 ）針對無線通道衰落的多時間尺度特性，將通道條件snr分解到不同時間尺度上，在不同時間尺度上針對不同的衰落特性來設計不同的演算法，完成不同的任務：在大時間尺度（幀）上進行資源分配，面向應用提供qos保證，保持應用間price公平性的情況下，尋求系統總收益utility的最大化；在小時間尺度（時隙）上進行時隙調度，利用各用戶通道容量的時變性，使各用戶獲得比平均通道條件情況下更高的吞吐量。
  13. The propagation characteristics of underwater acoustic channels and their influences on long - range information transmission are studied thoroughly. based on the sonar equation, the optimal frequency band is abtained. from the calculation about transmission loss, the source level is forecasted. based on the random time varying channel theory, the fading characteristics of long - range underwater acoustic channels are analyzed

    系統、深入地研究了水聲通道特性及其對水聲遠程信息傳輸系統的影響；從聲納方程出發，確定了系統的最佳工作頻段；在聲傳播損失計算的基礎上，給出了聲源級的預報；基於時變通道理論，描述了遠程水聲通道的衰落特性。
  14. Safety of power transformers, power supply units and similar - particular requirements for perturbation attenuation transformers - part 2 - 19 : particular requirement mains - born perturbatiion attenuation transformers

    電源變壓器供電設備及類似設備的安全性.擾動衰減變壓器的特殊要求
  15. It uses the encouragement of step wave or other impulse current field source to produce the transition process field in earth. in the moment of shutting the power it produce the volute alternating electromagnetic field. from the abnormity of measuring the attenuation character of the second induction electromagnetic field, which produced by underground medium with time change, the conductive capacity and the position of the underground non - homogeneous substance can be analyzed

    瞬變電磁法（ transientelectromagneticmethod ）是一種時間域的電磁勘探方法，利用階躍波或其它脈沖電流場源激勵，在大地產生過渡過程場，斷電瞬間在大地中形成渦旋交變電磁場，測量這種由地下介質產生的二次感應電磁場隨時間變化的衰減特性，從測量得到的異常分析出地下不均勻體的導電性能和位置，從而達到解決地質問題的目的。
  16. The last part is the research of developing trend and controlling policy of chinese rbc, which is the appliance in the practice. fust, the macro environment and the main affecting factor to chinese rbc are discussed, and then point that under the current mechanism chinese rbc is to be peripheralized, especially to some poor - conditioned cities that will face the trend soo

    本文首先探討了中國資源型城市未來發展宏觀環境和主要影響因素的變化趨勢，並在此基礎上指出，在當前的發展機制下，中國資源型城市的發展將出現邊緣化的11b趨向，其中一部分發展條件比較差的城市將不得不首先面對相對衰退的危機。
  17. The accurately controlled signal source generates sinusoidal elastic wave accurately controlled in frequency and stable in phase to " illustrate " underground media. time signal stacker receive signal by stacking and doing fft to measure the transfer function of media. " sompi " cepstrum method retrieve group velocity travel times and decayed factors of wave element from observational data of transfer function in a limited frequency window

    精密可控震源用於產生頻率精確相位穩定的正弦彈性波以照射地層內部，信號疊加器通過對接收信號進行疊加和進行傅立葉變換的方式實現對介質傳遞函數的精密測量， 「存否」倒譜方法能夠根據一段窄帶頻域傳遞函數數據獲得時域上各個波成分的群速度傳播時間和介質衰減因子。
  18. Fibre optic interconnecting devices and passive components performance standard - continuously variable attenuators for category u. uncontrolled environment

    纖維光學互連器件和無源元件性能標準. u類連續可變衰減器.非受控環境
  19. Fibre optic interconnecting devices and passive components performance standard - part 053 - 3 : continously variable attenuators for category u - uncontrolled environment

    纖維光學互連器件和無源元件性能標準.第053 - 3部分: u類連續可變衰減器.非受控環境
  20. His work was done before the discovery of radioactivity and the understanding that natural radioactive decay provides a source of heat to the earth

    他的工作是做了，才發現放射性和諒解，即天然放射性衰變提供熱源，以地球。
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