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the decay
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  衰减
     When ACh (30 μmol/L) was applied simultaneously with corticosterone (0.1 - 10μmol/L) , the decay of IAch was faster with slight inhibition on the peak current amplitude.
     同时给予ACh(3Oμmol/L)和皮质酮(0.1-10μmol/L)加速I_(ACh)的衰减且轻微抑制I_(ACh)峰值.
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     THE DECAY OF THE RADIATION DEFECTS IN P-N-P TYPE SILICON DEVICES
     P-N-P型硅器件中辐射缺陷的衰减
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     The photoluminescence spectra and the decay curves were recorded on RF-5301PC.
     采用RF—5301PC荧光分光光度计测定激发光谱、发射光谱和磷光衰减曲线;
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     Experiments show that the decay process of F2+ centers in LiF is a second order reaction.
     实验结果表明,LiF晶体中F_2~+心的衰减过程为二级反应。
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     Its passband frequencies ranged from 500 to 1000Hz and the critical stopband frequencies for high pass and low pass filters were 300 and 2000Hz, respectively. The decay of amplitude was lower than -25dB in stopband.
     数字滤波器通带频率500~1000Hz,其高通和低通阻带截止频率分别为300和2000Hz,阻带衰减大于25dB。
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  衰变
     We reconstruct D~0 from the decay chain D~(·+)→π_s~+D~0,D~0→K~+π~-.
     我们通过衰变链D~(*+)→+π_s~+D~0,D~0→K~+π~-来重建D~0。
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     For the decay modes B_d~0→PP, △~(++)■~(--) and △~0■~0, N_(b)~-~10~7--10~8.
     对于衰变B_d~0→PP,Δ~(++)■~(--)和Δ~0■~0,N_(b)~10~7—10~8。
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     The ten new γ rays of 41.2, 50.7, 196.8, 199.6, 223.9, 233.1, 250.2, 342.1, 403.6, and 406.4 keV assigned to the decay of ~(197)Os were observed. And the half-life of ~(197)Os is determined to be.
     观测到了能量为41.2、50.7、196.8、199.6、223.9、233.1、250.2、342.1、403.6和406.4keV的10条新γ射线,并指定为~(197)Os的衰变
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     It has been found that the decay of 143Dy consists of two components, i. e. the decays from 1/2+ ground state and 11/2- isomeric state with the half-lives of (6.0±1.5) s and (3.0±0.5) s, respectively.
     从中看到了143Dy的衰变包括有1/2+基态和11/2-同核异能态的两种衰变成分,并且确定了它们的半衰期分别为(6.0±1.5)s和(3.0±0.5)s。
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     The rate constant of the decay of free radical was evalu-ated as k = 4.814×10~(-2)s~(-1).
     估算了自由基衰变速度常数k=4.814×10~(-2)S~(-1).
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  “the decay”译为未确定词的双语例句
     From the decay constants and fluorescence intensities, the rate coefficient at 360 ℃ for collisional energy transfer from Na_2(B ~ 1Π_u) to Na_2(2 ~ 1Σ+_g) was found to be 5.7×10~-10 cm3·s~-1 . The predissociation rate of the B ~ 1Π_u is 2.7×106 s~-1 .
     在360℃,根据辐射衰变率和荧光强度,得到Na2(B1Πu)到Na2(21Σ+g)碰撞转移率系数为57×10-10cm3·s-1,而B1Πu的预解离率为27×106s-1。
短句来源
     The decay rate in 0~1.5 month and 1.5~3 month were 18.9% and 18.7%, respectively.
     0~1.5个月和1.5~3个月残体腐解率分别为18.9%和18.7%。
短句来源
     THE DIFFICULTY OF THE DECAY τ→πν_τ AND SPIN 3/2 HEAVY LEPTON
     τ→πV_τ疑难和自旋3/2的τ轻子
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     γ-Ray Relative Intensity Measurement in the Decay of ~(166m)Ho
     ~(166m)Ho γ射线相对强度测量
短句来源
     The effective dose equivalent of the decay productof -220Rn to the local residents is 228 μ Sr·a-1(The collective effective dose equivalent is 0. 9×102 man·Sr).
     220Rn子体所致居民有效剂量当量为228μSv·a-1(集体有效剂量当量为0.9×02man·Sv)。
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  the decay
The mass loss patterns for the four litter types fitted the exponential model and the decay constant (k) can be well predicted by initial AIF/N.
      
Our study proved that changes in precipitation significantly altered the litter quality, and therefore indirectly changed the decay process of leaf litters.
      
Prior to the decay of the relaxed fluorescent state (FS or I state), the protein is activated via a mechanism that does not require double bond isomerization.
      
The latter usually decays for large distances r like a Yukawa function exp(-κr)/r, where 1/κ is the decay length (normally different from the Debye length), but, for smaller r, the screened Coulomb potential is a more complicated function.
      
It was connected with the decay of the current flowing across the magnetotail.
      
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The branching ratios of the decay of the hyperons, the ratios of the mean life times of the decay of various hyperons and the ratios of the life times of the hyperons to that of the K+ -meson are calculated by using the universal Ferm weak interaction proposed by Feynman and Gell-Mann and the strong interaction proposed by Salam. The perturbation theory is used with a cut off in the region of large momentum. By using the coupling constants of the strong interaction given by Warner and choosing suitable...

The branching ratios of the decay of the hyperons, the ratios of the mean life times of the decay of various hyperons and the ratios of the life times of the hyperons to that of the K+ -meson are calculated by using the universal Ferm weak interaction proposed by Feynman and Gell-Mann and the strong interaction proposed by Salam. The perturbation theory is used with a cut off in the region of large momentum. By using the coupling constants of the strong interaction given by Warner and choosing suitable values for the other two coupling constants remaing to be fixed most of the results of our calculation agree fairly well with the experiments. The worst result differs from the experimental Values at most by

本文应用了费曼和盖尔曼所提出的普适费米弱相互作用和同位旋守恒的强相互作用计算了各种超子、K介子衰变的分枝比和平均寿命的比例。在计算时应用了微扰论,并在大动量处将相互作用截断。在应用了查尔斯·瓦纳所给出的相互作用常数和对其余两个常数作了一定的选择之后,得到的分枝比和平均寿命之比大部分和实验结果符合,最坏相差一个因子二。如果选择本文所采用的相互作用常数,可以改进前一篇源文中K~+介子分枝比计算结果和实验的符合程度。 本文计算表明V-A普适弱相互作用确实适用于K分子和超子衰变现象,表明在解释这些现象时,必须考虑到“很强”和“较强”两类强相互作用所分别产生的影响。此外,本文还表明Λ和∑应具有相同的相对宇称,K分子和核子、超子之间的四种强相互作用中必须至少有一对是膺标量耦合。

By assuming various forms of interaction Hamiltonian the angular distribution of the decay products of spin 1/2 particle obeying the Dirac equation and that of spin 3/2 particle obeying Rarita-Schwinger equation are calculated. The ratio of the strength of parity conserving and the parity non- conserving interaction on the one hand and the asymmetry parameter α on the other hand is discussed. It is pointed out, that if the vector and pseudo-vector coupling in the universal Fermi weak interaction proposed...

By assuming various forms of interaction Hamiltonian the angular distribution of the decay products of spin 1/2 particle obeying the Dirac equation and that of spin 3/2 particle obeying Rarita-Schwinger equation are calculated. The ratio of the strength of parity conserving and the parity non- conserving interaction on the one hand and the asymmetry parameter α on the other hand is discussed. It is pointed out, that if the vector and pseudo-vector coupling in the universal Fermi weak interaction proposed by Feynman and Gell-Mann are exactly equal to each other, then this theory gives an asymmetry parameter a of A particle decay, which is consistent with the experimental result. If the ratio of the square of these two coupling constants is 1:1.55 as suggested by β-decay experiments, then the asymmetry parameter derived from this theory is -0.97, which is already on the margin of the experimental data. The angular distribution of the decay products of spin 3/2 particle obeying the Rarita-Schwinger wave equation cannot be made agree with the experimental result of the ∧ particle decay, a conclusion, which was first pointed out by Lee and Yang by using general arguments.

假设了一定的相互作用哈密顿量,计算了自旋为1/2。而服从狄拉克波动方程的粒子衰变产物的角分布,计算了自旋为3/2而服从赖列泰—许温格波动方程的粒子的衰变产物的角分布。讨论了宇称守恒相互作用和宇称不守恒相互作用强度之间的比例和不对称系数α的关系。指出利用费曼—盖尔曼的普适费米相互作用推导得的Λ超子衰变产物的角分布不对称因子和实验数值一致。指出假使在重正化以后矢量耦合和赝矢量耦合常数不再相等,那末不对称因子的数值可能有相当大的改变。因此准确测定α的数值有助于费曼—盖尔曼普适费米相互作用的重正化效应的研究。服从赖列泰—许温格波动方程,自旋为3/2的粒子衰变产物和实验上得到的的Λ超子衰变产物的角分布不可能符合。这和李政道和杨振宁的一般结论一致。

The cloud-chamber has a volume 30 x 30 x 10 cm3 in a maguetic field of 6200 gauss, which is operated at a 3185m mountain altitude. In a set of 30000 pairs of photographs taken, 105 events of the decay of neutral V particles and 21 of the decay of charged particles wore observed. It is seen that 16 events have been classified as due to the decay of A0 particles, 26 as due to the decay of θ_1~0 particles, one as decay of a θ_2~0 particle and 62 as nonclassified. We have studied the...

The cloud-chamber has a volume 30 x 30 x 10 cm3 in a maguetic field of 6200 gauss, which is operated at a 3185m mountain altitude. In a set of 30000 pairs of photographs taken, 105 events of the decay of neutral V particles and 21 of the decay of charged particles wore observed. It is seen that 16 events have been classified as due to the decay of A0 particles, 26 as due to the decay of θ_1~0 particles, one as decay of a θ_2~0 particle and 62 as nonclassified. We have studied the following properties of the A0 and θ particles, the results of which are summamed as follows:

用一架30厘米×30厘米×10厘米磁场为6200高斯的云室,在海拔3185米的云南落雪高山实验室拍摄了30000对照片,获得105个ν~0,而可以进行分类的有43个。其中有26个θ_1~0,16个Λ~0和一个θ_2~0。本文对θ_1~0,Λ~0和一个θ_2~0进行了研究,其结果如下:1)Q值,Q_(Λ~0)=(36.2±2.5)Mev,Q_(θ_1~0)=(233±11)Mev;2)平均寿命,τ_(Λ~0)=(3.19_(-0.92)~(+2.42))×10~(-10)秒,τ_(θ_1~0)=(1.14_(-0.27)~(+0.49))×10~(-10)秒;3)动量分布与以前的工作没有显著差别;4)N(Λ~0)/N(θ_1~0)=0.51±0.22(权衡数);5)Λ~0和θ_1~0在质心系的衰变角分布没有明显的不对称性;6)一个θ_2~0在静止坐标系寿命为~10(-9)秒,衰变类型可能为θ_2~0→π~-+π~++π~0或者θ_2~0→π~±μ~+ν。

 
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