衰減期 的英文怎麼說

中文拼音 [shuāijiǎnqī]
衰減期 英文
decay period
  • 衰 : 衰動詞（衰弱） decline; wane
  • 期 : 期名詞[書面語]1. （一周年） a full year; anniversary 2. （一整月） a full month
  • 衰減 : attenuation; decay; damping; reduction; rejection; weakening; deamplification; dampening; dying o...
  1. The investigation of a lot of parameters about treated sandstone, brick materials and earthen materials with fluorited polymers has been carried out, such as the formation of polymer, the penetration depth, porosity, capillary absorption and penetration coefficient, water uptake, compressive strength, drilling resistance, absorption isotherms of water vapor, water vapor diffusion, color changes as well as resistance to desegregation of water, frizzing - throwing cycles, worming - cooling cycles, and so on. in addition, the influence of salt crystallization, acid and base, and uv aging have also been assessed in order to better understand the protection effects and utilization possibility of two fluorinated polymers, mainly according to astm standard and the combination of international methods together with general technological

    分別以國家級文物保護單位的土質、砂巖和磚材文物樣品為對象，依據astm標準及國際通用文物保護研究方法與評估準則相結合，通過膠化物形成周期、滲透深度、孔隙度、毛細吸水和滲透系數、持水量、抗壓強度、抗鉆強度、吸附水蒸氣的能力、透氣性、外觀顏色等系列參數的測定，及凍融、冷熱循環、酸堿腐蝕后抗壓強度的衰減、可溶鹽對保護效果的影響、酸堿及光照對表面保護效果的影響，對兩種含氟聚合物及其與有機硅的共混物在文物加固保護和表面防護中的可行性和保護效果給予了系統研究。
  2. Whether the decreased solar activity was somehow responsible for the little ice age is still unknown.

    太陽活動的衰減是否會以某種方式引起小冰川期，這還不清楚。
  3. There is great change of negative current component when it happens the line - open fault. it is marked as the occurrence of the fault. and it can be concluded the phase characteristic of negative current in the line. in the transient course, there are plenty of harmonics in the fault line. through the transient analysis, it is drawed that the amplitude of each harmonic in fault phase is greater than other phases. harmonic current in fault line is far greater than other normal lines

    發生斷線故障以後，線路中會出現負序電流的突變，可以作為故障啟動判斷的標志，並且通過分析得出了故障時負序基波電流的相位特點。在故障暫態過程中，故障電流中含有大量豐富的諧波成分，各次諧波在故障期間有突變，並且衰減很快。
  4. So in fact, if they senesce just a tiny tiny bit over time - - that is, if their half - life gets shorter, very very slowly - - we wouldn ' t actually be able to tell that this was happening in the time that we took our measurements, because the acceleration in the rate of atoms decaying ( relative, of course, to the number that had not decayed already, which is always decreasing ) would be too tiny to be statistically detectable

    所以在事實上，如果它們隨時間衰老得只那麼一點點， ?就是說，如果它們的半衰期縮短得非常慢?那麼我們實際上不可能知道，在我們測量期間發生過衰減，因為原子衰減的速率加速得太小，統計學上檢測不出（當然，是相對于不曾衰減的數目而言，不曾衰減的原子數目總是在減少） 。
  5. We had observed more than ten selected asteroids using 1 - meter telescope in yunnan observatory during 2000 to 2002. the observational data of seven asteroids had been reduced and analyzed. we have derived their synodic periods and estimated the shape and orientation of rotational axis for one asteroid

    為此，我選定了一些直徑在125公里左右的小行星進行觀測和分析；一方面，測定它們的自轉周期，進行「角動量衰減」現象的研究，另一方面，對小行星形狀和自轉軸指向進行估算，為小行星碰撞演化研究提供更為有利的證據。
  6. It is found that if the cavity dissipation is losses and the reservoir is in vacuum, the quantum nonlocality appears periodically. when the cavity dissipation and the average photon number of the reservoir are taken into account, the initial quantum nonlocality will be lost. the rapidity of the loss of the initial quantum nonlocality depends on the amplitude of the initial field, the average photon number n and the cavity damping constant k

    結果表明，如果腔場無損耗且處于真空庫，則量子態周期性地顯現出一定的非局域性；如果考慮到腔場的損耗和熱庫的平均光子數，那麼，量子態將會喪失它初始的非局域性，初始量子非局域性喪失的速度與初始腔場的幅度、腔的衰減系數以及熱庫的平均光子數有關，場越強、平均光子數和衰減系數越大，量子非局域性喪失得就越快。
  7. Because of the unreasonable operation mode, the reservoirs sedimentation is serious, which lead to the problems of inadequate use of water resource, degressive works benefit and high risk in water works operation and flood control in this area

    但長期以來，由於運用方式不合理，水庫工程泥沙淤積嚴重，徑流資源得不到充分利用，工程效益逐年衰減，並對工程運行和地區防洪安全形成嚴重威脅。
  8. In the paper, prescale technology, interpolate method, averaging method and multiple period synchronization method are used to measure the frequency accurately. diode demodulating technology, and power attenuated method or probe coupling & water load technology are employed to measure the power of high power microwave. isothermal technology is used to improve the stability of demodulator and to expend the range of square linear region

    本文採用預分頻法、內插法、多周期同步法、平均法實現了頻率的精確測量;利用二極體檢波技術，結合衰減法或探針耦合+水負載技術實現了大功率微波功率的測量;採用恆溫技術提高了二極體檢波器穩定度;完成了單片機串口通信協議設計和系統電磁兼容的分析和設計。
  9. The opinions of experts on this subject are as follows : people in middle age are in a more stable stage of life, while people in old age have entered the deterioration stage. since people in old age engage in less activity and suffer from physical depletion, they should reduce their intake of food accordingly. otherwise, it is very easy for them to become overweight, which is a great enemy to the health of the elderly

    專家的看法：人到中年，屬于穩定期，進入晚年，更是衰老期，人步入晚年，活動減少，消耗減少，因此食量也應相對的減少，否則極易造成肥胖，而肥胖是老年健康的大敵，人到老年期，一切機能都在衰退中，如不適量地減食，會造成消化器官負擔過量，易染胃腸疾病。
  10. It also considers the human physiological characteristic, seasonal attenuation of human cerebra, and to make the user profile update along the time

    考慮到人類大腦周期性衰減的生理特點，使用戶特徵文件隨時間動態更新。
  11. In the mean time, i test the separator ’ s performance, including the rate of hole 、 the performance of absorbing electrolyte and the conductance eletrochemical steady range 、 machine intensity test, and then make bettery to test its cycle performance. the test result show that, the spreading separator get better performance, when dbp ’ s percentum reach 50 %, and dry temperature reach 90, after ultraviolet radiation disposal. the test show that, the separator has high conductance reach 6. 1 10 - 3s / cm ( 25 ), and the machine intensity can reach 3. 92 mpa, this separator can meet the need of making bettery, the bettery capability will go down after 30 cycle. and the bettery show worse performance under high temperature, under 70, the bettery will get fire. making the intensified seprator, i find that when dbp % : pvdf % = 40 % : 60 %, dbp % + pvdf % : sio2 % = 70 % : 30 %, the separator get

    但用其制備的電池循環30周期后容量發生衰減，並且電池高溫性能差， 70下電池燃燒;強化聚合物膜的最佳制備配比條件為: dbp : pvdf為40mass % : 60mass % ， dbp含量與pvdf含量之和與納米sio2含量比值為70mass % : 30mass % ;強化電解質隔膜的室溫離子電導率也可達4 10 - 3s / cm左右，完全能滿足聚合物鋰離子電池的使用需要;機械強度遠遠大於流延法制得的隔膜，達到108 . 84mpa 。
  12. Proved with the mixing rate using parameters tw and r ^ it showed that large amplitude and high frequency could greatly enhance the mixing rate. but at large st, the rate of attenuation appears to be in periodic fluctuation at the range of low frequency, so there must be some best partnership of amplitude and frequency

    用參數t _ w 、 r _ （ 15 ）表徵的混合效率表明：總的來說大振幅、高頻率有利於混合，但在st較大的低頻率區中衰減速度會有周期波動的特性，存在最佳的頻率振幅配對。
  13. It could pull its economy into recession, which would dent global and european growth

    一方面它可能把它的整個經濟拖入衰退期，從而減緩全球和歐洲經濟的經濟增長。
  14. The main cause of signal ' s decrease in infrared channel of spacecraft flying remote sensing instrumentation is water vapor deposition on the surface of low temperature optical instruments which released from materials

    摘要空間遙感儀器紅外通道的信號衰減，人軌初期的主要原因是由於材料釋放的水汽在低溫光學窗口表面沉積，導致紅外透射率降低所致。
  15. ( 7 ) from analysis, the smg model with decaying recursion updating is the most suitable model for reservoir 10 day runoff forecast at liujiaxia and longyangxia. and neural network model is the next

    （ 7 ）通過對比分析，認為加衰減遞推實時修正的smg模型是最適合黃河上游的中長期水文預報模型，神經網路次之。
  16. It is indicated that the hydration process of cement - based materials with slag, fly ash and silica fume is different in some degree from that of neat cement because of the difference in mineral structure and hydration mechanism. the periods of accelerating, decelerating and terminating are prolonged and hydration reaction decelerates. the second peak of rate curve of the heat evolution could be divided into two small peaks, which are contributed to the hydration of clinkers and mineral mixtures at the temperature of 30 but when temperature comes to 50, the two small peaks combine into one and the reaction accelerates

    結果表明，與硅酸鹽水泥相比，由於礦物摻合料與水泥熟料在活性和水化機理上的差異，水化歷程有較大的改變：多組分體系誘導期、加速期和衰減期延長，水化反應速率明顯降低；低溫時，水化放熱速率曲線上的第二放熱峰細化成分別對應于熟料和礦物摻合料水化的兩個小峰；高溫時，反應速率加快，雙峰合併；進一步研究發現，摻合料的種類與摻量對水化歷程也有較大的影響；建立了適用於多組分水泥基材料不同水化階段的水化動力學方程。
  17. Generally speaking, the high group velocity and low attenuation factor and high qr in the same area, but relatively low group velocity and high attenuation factor and low qr in the same area in china is the general distribution

    在不同周期，面波衰減系數或品質因子在整個中國大陸區域分佈是不均勻的；總體表現為高群速度分佈的區域呈現高叢和低衰減系數、低群速度分佈的區域呈現低叢和高衰減系數分佈的特點。
  18. The results of the calculation indicate that the modulus of elasticity of manwan dam has entered the attenuation moment after increase and the attenuation will gradually lessen

    並對計算得到的結果進行分類討論分析。計算結果表明彈性模量經過最初一年的增長后就進入衰減期，但是衰減趨勢逐漸平緩。
  19. Based on the climatic and phonological conditions at each stage, the development characteristics of the arthropod community as well as the management strategies of its dominant pests were discussed

    可將棗園節肢動物群落在時序上分為發展期、過渡期、鼎盛期和衰減期4個階段，並結合氣候、物候變化，討論了各階段群落的發生特點和主要害蟲的治理對策。
  20. The life cycle theory illuminates that there are several phases during the development of retailing and the development of general merchandise industry is also instructed by this theory. after analyzing the developing situation of general merchandise industry in a few typical countries and regions, i get the special life cycle of general merchandise industry, that is the stage of growth, the stage of maturity, the stage of decline and the stage of rebounding

    生命周期理論闡明了零售業的發展是具有階段性的，作為主要零售業態之一的百貨業當然也被涵蓋在這個規律之中，本文在對幾個具有代表性的國家和地區百貨業的發展狀況進行分析后得出了百貨業獨具特點的生命周期規律即成長期、成熟期、衰減期和穩定期。
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