助手标题  
全文文献 工具书 数字 学术定义 翻译助手 学术趋势 更多
查询帮助
意见反馈
   x-mode 的翻译结果: 查询用时:0.009秒
图标索引 在分类学科中查询
所有学科
更多类别查询

图标索引 历史查询
 

x-mode
相关语句
  x型
     The design and application of the non-equilateral X-mode rod-link chain mechanism
     非等边X型杆链机构的设计与应用
短句来源
     Present the definition of the non-equilateral X-mode rod-link chain mechanism,and then the mechanism design and statics analysis are carried out,the simulation model made up of the non-equilateral X-mode rod-link chanin mechanism are set up. At last,the structural features and applied ranges are pointed out.
     给出了非等边X型杆链机构的定义,进行了机构的设计和静力学分析,建立了由非等边X型杆链构成的机构仿真模型,指出了其结构特点和应用范围。
短句来源
  “x-mode”译为未确定词的双语例句
     Wave traces and absorption coefficients of O-mode and X-mode waves near the electron cyclotron frequency were computed in the HL-1M plasma.
     计算了频率在电子回旋频率附近的O波和X波在HL 1M等离子体中的传播轨迹和吸收系数。
短句来源
     The reflected electrons of a loss-cone distribution can drive the electron cyclotron maser instability when a nonlinear density wave travells through the bottom part of the magnetic loop. The maser instability will excite the second harmonic O-mode and X-mode to dominate the solar radio millisecond spike radiation.
     在磁拱底部非线性等离子体密度波传播期间,损失锥分布的反射电子驱动着电子迴旋maser不稳定性的增长,激励出二次谐频波模,支配着太阳射电毫秒Spike辐射。
短句来源
     Thle fluctuations bring aboutthe nudulation of the ratio of near 2~(1/2) 2 . And it leads to the growth of the electron-cyclotron maser to control the radiation of X-mode or O-mode wave, and to reverse the sense of the polarization of the spikes and FFS.
     这种波动和起伏使得等离子体频率与磁迴旋频率的比值(ω_p/Q_e)在2~(1/2)附近起伏变化,从而造成电磁波X波模和O波模的电子迴旋脉塞不稳定性增长率交替支配着电磁波的辐射,产生spike 辐射偏振状态的逆转.
短句来源
     Using this system,both O-mode and X-mode experiments with top injecting and O-mode experiment with horizontal injecting can be performed.
     利用这套系统,可以作从水平方向注入的O模加热实验,也可以作从顶部注入的O模或X模加热实验。
短句来源
     Results showed that both O-mode and X-mode waves can be effectively absorbed by the plasma,the absorbability of the plasma is highly localized,the single absorbance is high,and the power deposition strongly relies on the plasma parameters.
     结果表明 ,O波和X波能有效地被等离子体吸收 ,其吸收具有定域性 ,波的单次吸收系数较高 ,功率的沉积强烈地依赖等离子体参数。
短句来源
更多       
查询“x-mode”译词为用户自定义的双语例句

    我想查看译文中含有:的双语例句
例句
为了更好的帮助您理解掌握查询词或其译词在地道英语中的实际用法,我们为您准备了出自英文原文的大量英语例句,供您参考。
  x-mode
The diagnostics of the ionosphere was performed using X-mode probe waves in the frequency range fpr=4.3-7.8 MHz.
      
We discuss variations of these components in the case where additional X-mode heating is used.
      
A swappable twist reflector plate rotates beam polarization for 2nd-harmonic X-mode or fundamental O-mode ECRH.
      
Two X-mode reflectometers (V and W band) are dedicated to electron density profile measurements.
      
With further magnetic field increase, the intensity of the RTR x-mode decreases in comparison with the intensity of the o-mode and this decrease is higher for higher velocities of energetic electrons.
      
更多          


We consider the nonlinear saturation of a fast x mode instability near the electron cyclotron frequency due to electron population inversion. A quasilinear theory is discussed. The corresponding saturation time, amplitudes as well as the temporal evolution of the electron distribution functions are also studied.

在有弱相对论性电子时,在电子迴旋频率Ω_e附近存在快x模的不稳定性。从这一事实出发,我们用准线性理论分析了具有粒子数倒转的分布函数引起的不稳定性最后达到饱和的物理机制。进行了一些近似的计算,求出了电磁迴旋不稳定性的饱和时间和饱和能量及垂直、平行分布函数随时间的演化过程。发现用此理论算出的饱和能级与观察到的AKR结果是一致的。

This method, suitable for digital computation, is used for calculating all the natural frequencies, mode shapes and their resonant-vibration stress for a banded group of turbine twisted buckets vibrated in tangential, axial and torsional directions.In this approach, the buckets are connected elastically with a continuous beam and, as the following factors are considered, the calculation is done more accurately.a. Twist of blade.b. Modification due to the effect of shear deformation and rotary inertia in buckets...

This method, suitable for digital computation, is used for calculating all the natural frequencies, mode shapes and their resonant-vibration stress for a banded group of turbine twisted buckets vibrated in tangential, axial and torsional directions.In this approach, the buckets are connected elastically with a continuous beam and, as the following factors are considered, the calculation is done more accurately.a. Twist of blade.b. Modification due to the effect of shear deformation and rotary inertia in buckets and band.c. The effect of centrifugal force in revolution of a banded group.d. Part of the root of bucket participated in vibration.It does not only calculate tangential bending vibration in Ao, Po and Al modes, but also axial bending-torsional vibration in X, U and S.,nodes and different torsional modes.Through the comparison of more than ten stages with short and medium-height steam turbine buckets in large power units, we found the values of calculation basically agree with the measurement in the power plant.Having calculated the frequencies and modes of a banded group, we use the principle of energy conservation--during the steady resonant state of a banded group, within a vibration cycle, the energy supplied to the blades of the banded group by the existing force acting on tangential, axial and torsional directions is equal to the energy dissipated in damping on the above directions for all buckets in group--to calculate the real displacement and resonant-vibration stress of blade, root of buckets, band and rivets in group for different known vibration modes. At the same time, according to the fatigue strength of the material, steady stress, structure, technology and the operating condition, we get the permissible fatigue stress of material for judging the safety of the vibration stress. The author found that the result of the calculation of "169" accident of stages and the safe operating stages, an improved design of the original "169", agreed with the real circumstances.This method is mainly used to calculate short and wedium-height blade group. The author analyses the accident of the first-stage in French KT1501 steam turbine unit used in the whole set equipments with a capacity of 300,000 tons/year synthesized ammonia. The coefficient in calculation--the fractional stimulus S and logarithmic decrement δ derive from the French data. The calculating frequencies basically agree with the measmement and, according to the vibration stress value, we get the conclusion of the calculation for the accident stage as follows.1. The abruption accidents of the first stage in the original rotor (the 1st, 2nd and 3rd accidents) were due to axial-toisional resonance-U mode for four bucket's group and x mode for three bucket's. Although the blades and band were safe, the resonant-vibration stress of bucket root were unsafe and that of the rivet was large. Also, when extra fluctuating bending moment was applied from forced band vibration by steam inlet in partial circumference, the rivet was in danger. After two rivets had been used on the blade, the rivets were safe, but fatigue still occured in bucket root (as in the 5th accident)2. The abruption accident of the first-stage in the new rotor (the design was improved by the French but the abruption still took place as in the 4th accident) was due to a tangential resonance with Bo mode; its resonant stress of the bucket root was more than the permissive vibration stress of the material, thus causing it to fatigue abruption.The results of the calculation agree with the abrupting position and the surface of the crack in these accidents. Therefore, the author is of the opinion that all the five abru ption accidents that happened in the past were mainly due to the design of the banded group, not to the operation or defect of the material used.

本文叙述由汽轮机围带扭叶片组各类计算振型、按能量守恒原理进一步算得在发生各类振型的共振时叶片组叶身、叶根、围带及铆钉的振动应力。并根据材料的许用耐振强度判断其共振的安全性。本法主要用来计算电厂汽轮机中等长度的叶片。这里也计算了曾发生五次振动断裂的法国进口机组第一级动叶,计算结果表明该级原先叶片主要是由于2nZ喷咀激振力引起的叶片组轴向弯曲U型共振断裂。经法国修改设计后,仍旧断裂,但断于nZ喷咀激振力引起的叶片组切向弯曲B_o型共振。计算结论与实际事故部位及断口分析符合。

A mechanism of solar microwave millisecond spike emission is presented in this paper. Once after a beam of nonthermal electrons is injected downwards into a magnetic arch, it will form a hollow beam distribution, which drives electron-cyclotron maser (ECM) to emit electromagnetic radiation.Assuming the hollow beam to be a Gaussian distribution, we calculated the growth rate of X-mode at the second harmonic. By solving the diffusion equation we obtained the evolution of the distribution of nonthermal electrons,...

A mechanism of solar microwave millisecond spike emission is presented in this paper. Once after a beam of nonthermal electrons is injected downwards into a magnetic arch, it will form a hollow beam distribution, which drives electron-cyclotron maser (ECM) to emit electromagnetic radiation.Assuming the hollow beam to be a Gaussian distribution, we calculated the growth rate of X-mode at the second harmonic. By solving the diffusion equation we obtained the evolution of the distribution of nonthermal electrons, the variation of the growth rate vs. time, the saturation time of ECM, tsat, and the saturation energy density of the waves.Takingwhere ns is the number density of nonthermal electrons, we find out that millisecond spike emission (tsat=0.42ms) with very high brightness temperature (Tb=5×1015K) would be produced at frequency ω=2π×2.84 GHz, in accordance with the observation of the spike event on May 16, 1981.It is also found that the maser emission propagates within a thin surface layer of a cone stretching an angle of about 65° around the magnetic field.As the distribution of nonthermal electrons evolves, the transverse velocity component decreases while the parallel one does not. As a result, when the pitch angle diminishes, the electrons can penetrate through the magnetic mirror points and rush into the transition region to produce hard X-ray bursts.

本文提出由非热电子(60keV)的空心束(hollow beam)分布激发回旋脉降作为太阳微波毫秒级尖峰辐射的产生机制。文中求得了非常波模二次谐波的增长率及其随时间的变化、脉泽的饱和时间、饱和波能密度及脉降辐射的方向特征。 结果得到,当磁场强度B=507G,等离子体数密度n_(?)=4×10~9cm~(-3),电子温度T_e=1.4×10~6K,非热电子数密度与热电子数密度之比(n_s/n_e)≈4×10~(-5),磁场标高时,将在2.84GHz频率上产生高亮温度(T_b≈5×10~(15)K)的毫秒级尖峰辐射。

 
<< 更多相关文摘    
图标索引 相关查询

 


 
CNKI小工具
在英文学术搜索中查有关x-mode的内容
在知识搜索中查有关x-mode的内容
在数字搜索中查有关x-mode的内容
在概念知识元中查有关x-mode的内容
在学术趋势中查有关x-mode的内容
 
 

CNKI主页设CNKI翻译助手为主页 | 收藏CNKI翻译助手 | 广告服务 | 英文学术搜索
版权图标  2008 CNKI-中国知网
京ICP证040431号 互联网出版许可证 新出网证(京)字008号
北京市公安局海淀分局 备案号:110 1081725
版权图标 2008中国知网(cnki) 中国学术期刊(光盘版)电子杂志社