衰變常數 的英文怎麼說
中文拼音 [shuāibiànchángshǔ]
衰變常數
英文
constant, decay
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衰 :
衰動詞(衰弱) decline; wane
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數 :
數副詞(屢次) frequently; repeatedly
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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。
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We present a charge - transport model of the photorefractive effect with two deep traps ( two deep - trap model ) based on one deep - trap model and shallow - deep - trap model. we also found dark decay behaviors which accord with the two deep - trap model in the two - beam interference experiments. the fast decay - time constant of the space - charge field is obtained as 714s
此外,在ce : batio _ 3雙光束干涉光折
變光柵的暗
衰減實驗中,也觀察到了符合雙deep模型的
衰減現象,得到光折
變空間電場快
衰減時間
常數714s ,約12分鐘。
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According to the characteristic of ieee 1394 with wide bandwidth, common and real - time, the author put forward ieee 13 94 should be applied into real - time digital video transfer in optics - electronics theodolite. before engineering realization, carried out a video image transfer test on three types of digital video tape recorders and camera with ieee 1394 interface. we found that digital videos without compression transfered under ieee 1394 standard ( transfer from 4. 5m to 100m ), compared with analog videos, have no geometric distortion, and have better luminance, contrast, definition
作為工程實現前的實驗研究,對三類具有ieee1394介面的
數字錄像機和攝像機進行了視頻圖像傳輸實驗,發現無壓縮格式的按ieee1394標準傳輸的
數字視頻圖像(傳輸距離從4 . 5米到100米之間) ,較原始模擬視頻圖像在幾何位置信息上沒有
衰變,而在亮度、對比度、邊緣清晰度這些方面有明顯的優勢;但是按dvcam壓縮格式(
常見于sony公司的系列產品,是5 : 1的dct幀內壓縮)壓縮的
數字視頻圖像,較原始模擬參照圖像有明顯的幾何畸
變。
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The study shows that the early and late seed rains of constructive tree species in evergreen broadleaved forest at chongqing simian mountain had no activity. the bigger the seeds of the species and the earlier or later the seeds of the species matured, the higher the proportion of the seed rain damaged by animals. the quantitative variation of seed rain, active seed rain and seed bank did not take place at the same time. at early time, the number of seed banks of castanopsis fargesii, lithocarpus glabra, quercus myrsinrefolia, castanopsis plasyacantha, cinamomum subavenium. which own more active seed rain increased by geomitric series. the seed banks of castanopsis orthacantha and schima argentea were small, only survived a short time, and did not sprout next year. the quantitative dynamics of seed banks and their increasing or decreasing rates were decided by the proportion damaged by animals, dying speed of seeds and their resistance to pathogens and adverse circumstances, and the state of seed germination
對重慶四面山
常綠闊葉林建群種種子雨、種子庫的研究表明,建群種早期和晚期的種子雨無活力;種子偏早或偏晚成熟及大籽粒的樹種,其種子雨被取食的比例大;種子雨、有活力種子雨、種子庫三者的
數量
變化不一致;有活力種子雨量較大的栲、石櫟、小葉青岡、扁刺栲、香桂等,其種子庫密度在早期以近幾何級
數的方式增長,元江栲、銀木荷種子庫小,存在時間短,翌年無一年生萌發苗;種子庫
數量動態、消減率動態決定於種子被取食的強度、種子
衰老的速度以及種子對病菌、逆境的抗性和種子萌發的整齊性
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Biological decay constant
生物
衰變常數
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Meanwhile we find that decay constant fn and the tt mass mv monotonously decrease as nuclear matter density increases
我們同時發現介子的
衰變常數f _和質量m _隨著核物質密度_ n的增加而單調遞減。
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Using the effective action we got in a nuclear matter, we calculate the decay constant / ? and tt mass m - jf as functions of the chemical potential
利用我們得到的核物質中的有效作用量,我們計算了介子的
衰變常數和質量,他們都是化學勢的函
數。
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The operating principle of the compressed electret micromotor is the variable capacitance. the attenuation time constant of the charges on rotor surface is much longer than the shaping time of electret itself while the rotor is made of electret
扁平駐極體微電機的工作原理是電容可
變原理,電機轉子採用駐極體材料製成,轉子表面電荷的
衰減時間
常數要比駐極體本身形成的周期長得多。
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Based on priestley ' s evolutionary spectrum theory, an evolutionary process modulated by decline composite exponential function, is investigated as one kind of non - stationary excitation commonly encountered in engineering, the analytical solution of the response properties is gained due to proper simplification
基於priestley的演
變譜密度理論,對于工程中
常用到的
衰減指
數函
數調制的演
變過程激勵,可以通過對結構響應的合理簡化,得到響應特徵的解析形式。
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The influence of coriolis acceleration level on human oculomoor and perceptual responses to investigate the influence of different coriolis acceleration levels ( 0. 329 cm / s2 > 0. 493 cm / s2 ^ 0. 658 cm / s2 ) on human subjective sensation and nystagmus. basic parameters including the pattern, the duration and the intensity of ci as well as mean slow phase velocity ( mspv ), beat, time constant of slow phase velocity decay and duration of horizontal and vertical eng, were recorded
493cm s 『 ( n 』 20cm s2 ) 、 0石58cm婦』 ( 『 15cln s刁三種不同強度的科里奧利加速度引起的科里奧利錯覺形態、強度、錯覺持續時間及伴隨的水平、垂直性眼震的眼震次
數、最大慢相速度、平均慢相速度、慢相速度
衰減時間
常數、持續時間等參
數的
變化進行了觀察。
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( 3 ) we can detection the azimuth of crack growth by abnormal amplitude or the discrepancy of wave - speed. ( 4 ) we can guess whether crack contains fluids by the change of p - wave speed. second, using pore model, under press and temperature, we have studied the influences of pore density on the characteristic parameters of seismic wave
第一、利用人工裂縫模型,研究了裂縫密度、方位和張開度的
變化對地震波屬性參
數的影響,根據實驗結果,總結出:可利用橫波分裂的不同程度來檢測裂縫密度的高低;可利用縱橫波的振幅、主頻、
衰減(或品質因子q )和主振幅的
變化來檢測裂縫張開度的
變化;可利用速度的差異和振幅異
常來檢測裂縫發育的方向;可利用縱波速度的
變化來推測裂縫中是否含流體。
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Comparison study between the constant modulus decision feedback equalizer ( dfe ) and several others is made on combating the frequency selective fading of uwac, and their tracking performance to time varying is also investigated
?針對水聲通道的頻率選擇性
衰落,對比研究了
常數模判決反饋盲均衡演算法與其它幾種盲均衡演算法的性能。針對水聲通道的時
變特性,研究了該演算法的跟蹤摘要性能。
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This paper introduces some models of pavement operational performance ( including pavement structural remaining life, pavement condition index pci skid resistance index and international roughness index iri ) in term of application of apms
根據國內外
常用的機場道面性能模型研究狀況和道面管理系統的特點,介紹了道面結構剩餘使用壽命、道面狀況指
數pci 、道面防滑性系
數?和道面國際平整度指
數iri
常用的
衰變模型。
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The serum creatinine alue aries depending upon the laboratory where it is measured, is different between genders without a correction factor in meld and is generally inaccurate as a marker of kidney function in lier failure
血清肌酐值在實驗室檢測多變,其在無糾正系數meld評分中的性別之間有差異,並且在肝衰情況下作為腎功能標志通常是不準確的