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截止
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  cutoff
    (2) this decrease becomes more quickly as increasing energy spectral index 5 and decreasing low-energy cutoff E0 of energetic electrons;
    (2) 自吸率κv随暗波数s下降的陡度还随高能电子的能谱指数δ的增加和其低能截止能量 E0的下降而迅速增加;
短句来源
    If the new technique is put in practice,in condition of not adopting atmospheric distribution model,the accuracy of the low-altitude refractive delay correction will be improved from present meter level to centimeter level,and the cutoff elevation angle will be reduced to a range of 5°.
    这一新方法的实施,将能在避免采用大气分布模型的情况下,把较低高度角的折射延迟改正精度从现在的米级提高到厘米级,并且把截止高度角压缩到5°以内。
短句来源
  cut off
    A formula used to determine the upper cut off Rc of the fractal structure of the Universe is given by analysis of different apparent magnitude limited catalogues.
    本文给出了用几种达到不同极限星等的星系表确定宇宙分形结构上限截止尺度的公式.
短句来源
    Comparing the different mapping functions by using the PRARE and radiosonde and the relation between the elevation cut off and the repeatability of baselines obtained in VLBI experiment.
    利用VLBI实验中高度截止角与基线长度重复率的关系、探空气球(radiosonde)、PRARE资料比较了各种映射函数的结果。
  cut-off
    The results show,if the neutral hydrogen content is very low(that is,no lyman cut-off), the reradiatioh from dust must produce a temperature distortion 0.1-0.2K near the peak frequence of the 3K cosmic microwave background and does not depend on the dust models.
    结果表明,如果中性氢的含量很少,即星系前恒星的辐射谱无Lyman截止,尘埃的再辐射将使3K背景辐射在其峰值频率附近产生0.1K—0.2K的畸变,而与模型无关。
短句来源
    When the cut-off elevation angle of satellites are taken as 15°, the effects of horizontal gradients on tropospheric zenith delay of 7 stations are all less than 1cm.
    当卫星的截止高度角取为15°时,水平梯度对7个站的对流层天顶延迟的影响均小于1cm。
短句来源
    The pulsars with long pulse nulling distribute near the radio cut-off line and constitute a line nearly parallel to the cut-off line.
    发现缺脉冲现象显著的脉冲星分布在射电辐射的截止线附近,组成一条近于和截止线平行的直线。
短句来源
    Using the data of the Zwicky, Lick and Jagellonian catalogues, the upper cut-off Rc can be estimated to be at least 60-70 Mpc. The value of Rc increases with decrease of the ratio of the self-similar distribution component to the random distribution component and it may extend to 270 Mpc.
    利用Zwicky星系表、Shane-Wirtanen星系表和Jagellonian天区的星系表的数据,可以估计这一截止尺度R_c至少为60—70Mpc,且R_c随着自相似分布所占比例f的减小而增大,或可大到约270Mpc的尺度.
短句来源
    The problems on diagnostic to flare models, energetic particles propagation, and the low energy cut-off of the non-thermal electrons are discussed.
    对耀斑的诊断,高能粒子的传播,以及对非热电子谱的低能截止等问题进行了讨论。
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  “截止”译为未确定词的双语例句
    it is determined by the initial mass function(IMF) that if we can find FGS at last because IMF, which describes the frequencydistribution of the mass of stellar when they formed can determine the characteristicof the stellar system and its evolution.
    因为恒星初始质量函数,即形成恒星的质量分布函数,根本地决定了恒星系统的特性及其演化。 然而关于恒星的初始质量函数是否在某些恒星质量处具有峰值、是否具有一个特定质量或截止质量,目前的证据仍然十分贫乏。
短句来源
    (2)the corresponding time integral spectrum is proportional to the power of the particle momentum. The possibility of accelerating particles to high energy range is also discussed.
    (2)给出了相应的时间积分谱,它正比于具有指数截止的粒子动量的幂律.还讨论了粒子加速到高能区的条件及可能性.
短句来源
    2) To consider the effect of low-cutoff energy of non-thermal electrons,it is necessary to calculate with more strict theory of gyro-synchrotron radiation.
    2)为了考虑非热电子低能截止的影响,必须采用更严格的回旋同步辐射理论来计算。
短句来源
    It is shown that the low-cutoff energy has evident effect on the calculations,but the effects of the other parameters(such as the ambient temperature and density,high-cutoff energy,and emission direction) may be neglected.
    结果表明:低能截止和日冕磁场对计算有明显的影响,而其它参数(包括背景温度、密度、高能截止和辐射方向)的影响均可忽略。
短句来源
    Therfore the low-cutoff energy and coronal magnetic field should be solved together.
    因此,对低能截止和日冕磁场必须联立求解。
短句来源
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  cutoff
Let Γ be a smooth compact convex planar curve with arc length dm and let dσ=ψ dm where ψ is a cutoff function.
      
The short-wave cutoff boundary of the capillary wave spectrum is established.
      
Thus, as the particle concentration increases, the central jump in compression [shock wave] moves in the direction of the nozzle cutoff, while the Mach number on the axis of the jet in front of the forward jump diminishes.
      
The results of an experimental study of a flow of rarefied gas of density ~10-5 g/cm3 beyond the cutoff of a hypersonic nozzle (M?11) by means of an electron beam with energy up to 43 keV are presented.
      
A study is made of the propagation of three-dimensional acoustic perturbations in a two-dimensional gas flow in axisymmetric channels of variable cross sectional area at frequencies near the cutoff frequency.
      
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  cut off
Stabilograms of the body's general center of gravity (GCOG) were recorded for 15 s, including 6 s of silence, auditory stimulation (1.6, 3.2, or 4.8 s), and silence after the signal was cut off.
      
When the equilibrium was upset as a result of a change in plant weight, the movement of the beam's shutter cut off the flow of light incident on the photoelectric cell.
      
After 1, 2, 3, or 4 days, the treated leaves were cut off and mechanically infected with the potato virus X (PVX).
      
All leaves of young plants were cut off except the 4th, 5th, 6th, 7th, and 8th leaves.
      
We show that the threshold of the reaction under consideration tends to decrease with increasing z; the energy spectra of γ-ray sources at energies of ~10 TeV must be cut off in accordance with the calculated z dependence.
      
更多          
  cut-off
The results show that the 95% cut-off point for TC was 220 mg/dL, while for TG, it was 160 mg/dL.) increased significantly (P >amp;lt; 0.05).
      
PM was collected with a 13-stagelow pressure impactor (LPI) having an aerodynamic cut-off diameter ranging from 10.0 μm to 0.03 μm for a size-segregated collection.
      
The two cut-off points of these three stages are the preconsolidation stress and the structural yielding stress of the original clay, which could be determined by shear wave velocity measurement.
      
The proton energies of the population are below the low energy cut-off of the main dispersed proton population of the magnetosheath origin, and its intensity and density are also much lower.
      
The effect of the cut-off radius of the interparticle potential on the process of phase transformation is analyzed, and the position of spinodal of superheated liquid and supersaturated vapor is estimated.
      
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83 pulsars are statistically studied in this paper. The main results are as follows: (1)Taking the ratio λ of the loss rate of rotational energy to the radio luminosity of pulsars as a parameter of classification, we divide the 83 pulsars into 3 categories. This is not only necessary to the study of the statistical relationship between the luminosity and the magnetic energy in various regions, but it may also be a better method of classification. It may be seen from the plots of P-P, L_(radlo)-P and L_(radlo)-t...

83 pulsars are statistically studied in this paper. The main results are as follows: (1)Taking the ratio λ of the loss rate of rotational energy to the radio luminosity of pulsars as a parameter of classification, we divide the 83 pulsars into 3 categories. This is not only necessary to the study of the statistical relationship between the luminosity and the magnetic energy in various regions, but it may also be a better method of classification. It may be seen from the plots of P-P, L_(radlo)-P and L_(radlo)-t that different categories of pulsars have different evolutionary tracks and physical properties. The evolutionary tracks of the 3 categories of pulsars by the λ classification are something similar to those of the model proposed by Lyne et al.(1975) which involves a secular decay of magnetic dipole moment. Therefore the various categories of pulsars may reflect the fact that the different categories of pulsars have different time constants of decay, or the initial values of the magnetic moments were different at birth. There are no apparent properties on the above mentioned plots for the morphological classification by the integrated pulse profiles(S,D and C)(Taylor and Huguenin, 1971). (2)The radio luminosities of pulsars of various categories are all closely correlated to the magnetic energies and“twining”magnetic energies at the light cylinder, and not correlated to the magnetic energies at the surface of the neutron star. This shows that the local radiation regions are in the vicinity of the light cylinder. These magnetic energies may be the energy sources of pulsar radiation. (3)Some pulsars in the right region of the plot of P against P constitute a cut-off line of radio radiation, whose slope is just—4.So that it is a line for which the“twining”magnetic energy PP~(-4)is constunt, It is closer to the observational results than the cut-off line, proposed by Lyne et al.(1975), for which PP~(-5)is constant. This result gives support to the accumulatimi and release of energy in the vicinity of the light cylinder.

本文对83颗脉冲星进行了分类统计研究。主要结果如下: 1.采用转动能损失率与射电光度的比值作为分类参数可以较好地反映不同类型脉冲星的物理特性和演化方式。 2.由于各类脉冲星的射电光度和光速圆柱附近的磁能之间都有着相关系数较高的回归关系,而射电光度和表面磁能之间却不相关,由此推论脉冲星辐射部位很可能在光速圆柱附近。 3.在周期变率户和周期P的关系图上,光速圆柱附近的“缠绕”磁能PP-4的某一临界值可作为射电辐射的截止线,它比Lyne等提出的光速圆柱处的磁能户PP~(-5)作为射电辐射截止线更接近观测事实。

In this paper, the pulsars with pulse nulling are regarded as a subtype to be investigated. The pulsars with long pulse nulling distribute near the radio cut-off line and constitute a line nearly parallel to the cut-off line. From this paper, it can also be seen that the magnetie field at the distance of light cylinder is rather low and the rate of energy loss is rather small for the pulsars with long pulse nulling. The possible reason for the pulse nulling is discussed.

本文把呈现缺脉冲现象的脉冲星作为一种次型来进行研究。发现缺脉冲现象显著的脉冲星分布在射电辐射的截止线附近,组成一条近于和截止线平行的直线。此外,这种脉冲星还有如下的特点:它在光速圆柱距离处的磁场偏小,能损率也偏小。文中讨论了缺脉冲产生的可能原因。

The non-similar questions of the blast waves which propagate in a variable density medium with ring-magnetic field has been treated.On the basis of the analytical solution obtained by this paper the propagating of the solar flare-shock waves have been discussed.When the flare shock waves propagate into the interplanetary space,the configuration of magnetic field appears U-type,and mainly occurs in the part of the head of a shock wave (>0.5R).It has some similarity as the cosmic ray storms and the magnetic storms.Particularly...

The non-similar questions of the blast waves which propagate in a variable density medium with ring-magnetic field has been treated.On the basis of the analytical solution obtained by this paper the propagating of the solar flare-shock waves have been discussed.When the flare shock waves propagate into the interplanetary space,the configuration of magnetic field appears U-type,and mainly occurs in the part of the head of a shock wave (>0.5R).It has some similarity as the cosmic ray storms and the magnetic storms.Particularly noteworthy is the fact that the flare-shock waves must have higher energy than the magnetic cut-off energy Em=(λ1S2/4π) j0Rsh(λ1,j0 are the parameters relative to a shock wave respectively,8 is the constant proportional to the ring-magnetic field at the reference point).It is possible that the flare-shock waves propagate into the interplanetary space.The ring-closed region of the magnetic field has stronger constraint to the propagation of the shock wave.It can be qualitatively explained that after the occurrence of the solar flare-shock waves a number of geophysical disturbance phenomena are not always observable on the earth,which will be relative to the configurations of the magnetic field on the solar flare.

本文求解了点源爆炸波在环形磁场中传播的非自型问题。以耀斑引起的击波传播为例讨论了解的应用。从中可以看到,磁场扰动呈U形,主要发生在0.5Re—1.0Re的击波区域;行星际磁场的存在使击波到达1AU的时间延长了几个小时;击波必须具有大于磁截止能量E_M=时(符号意义见内容)才有可能传播到1AU以远的地方,日冕磁场结构对耀斑击波进入行星际空间的传播有重要作用。

 
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