查询词典 be X-rayed

The theory of accretion disks are important for many astrophysical phenomena, including Quasars, active galatic nucleic, X-ray binary stars, and young stellar objects. The most important branch of accretion djsk theory is the stability properties of djsks. It is widely considered that the luminosity variations of various astronomical objects are associated with the instability of accretion disk. The viscosity plays an important role in the accretion disk theory, and magnetic field exists commonly in astronomical phenomena. A more realistic analysis of the stabihty of the accretion disk should include both the radjal and azimuthal perturbations because of the strong shear of viscous flow.In this paper, according to the luminosity Variations of Various astronomical objects, we study the radial-azimuthal instability of an isothermal with magnetic field. We find that the radial and azimuthal fields B〓,B〓 are mainly responsible for enhancing the instability of the magneto-acoustic modes and non-axisymmetric modes,and that pulsational oscillations are larger in the radial than in the Z direction. The model may be useful in explaining the periodic light variation of FU orionis and. T Tauri stars.

在许多天体物理现象中，例如活动星系核，X-射线双星和年青的恒星理论中，吸积盘理论起着重要的作用，而吸积盘理论中的一个重要分支是吸积盘的不稳定性理论，普遍认为活动天体的周期，准周期光变现象与吸积盘的不稳定性有关，在吸积盘理论中，粘滞起着重要的作用，而磁场是天体物理中普遍存在的现象，对于几何薄吸积盘不稳定性分析，由于强剪切流的缘故，应该包括径向和环向扰动两个方面，本文结合天体物理中的各种周期，准周期光变现象，研究了含磁场的等温薄吸积盘的径向-环向振荡不稳定性，结果表明：磁场的径向和环向分量对磁声模和非轴对称模的不稳定性的增加起着主要的作用，且径向振荡大于轴向振荡，所得结果有利于解释FU Orionis和T Tauri Stars的周期光变现象。

The methods of radiotherapy: teletherapy using Co-60 or 10MV X-ray to be followed by two sessions of intracavitary Cs-137 therapy.

治疗的方法是先用钴60或10MV之X射线作远隔治疗，然后给予两次铯137(Cs-137)子宫及阴道腔近接治疗。

X-ray diffraction and transmission electron microscopy results indicate that the sample can be indexed to tetragonal ZnMn2O4 and the particle size ranges from 20 to 50 nm.

采用X射线粉末衍射和透射电子显微镜测试技术对样品进行了分析表征，结果表明所合成的催化剂为粒径均匀的纳米粒子，平均粒径在20-50 nm，具有较好的分散性。

Pt-inserted nanotube titanic acid was prepared as follows: H_2PtCl_6 ethanol solution was filled into the titanic acid nanotubes and then annealed in air at 673 K for 3 h.X-ray photoelectron spectroscopy showed that H_2PtCl_6 has been converted to Pt~0 and PtO.The result of electron spin resonance revealed that there are single-electron-trapped oxygen vacancies to be formed in PNTA after heat treatment in air.

通过在真空条件下将氯铂酸的乙醇溶液引入到钛酸纳米管内，再经过热处理制备了镶嵌铂的纳米管钛酸。X射线光电子能谱表明氯铂酸大部分转变成Pt0和PtO，顺磁共振谱表明在PNTA中生成了束缚单电子的氧空位，在紫外-可见扩散漫散射谱谱上表现出对可见光有吸收能力。

The x and y coordinates from the top-left of the window, of the window's region that needs to be redrawn.

需要重画的窗口区域的从窗口左上角开始的x和y坐标。

If you remember your trigonometry, then you may recall that the arctangent function can be used to get an angle from an X and a Y coordinate.

如果你还记得你的三角，然后您可能会记得，反正切函数可以用来从一个角度的X和Y坐标。

METHODS The structures of compound I, extracted from Clausena lansium Skeels, and synthesized compound III were determined by single crystal X-ray diffraction analysis. The stereo-structures of compound II and IV were also built up through Tripos force field based on crystal structures of compound I and III. RESULTS The molecular formula and molecular weight were found to be C18H17O2N and 279.34 respectively.

方法用单晶X-射线衍射分析法测定了从植物黄皮提取物中分离得到的化合物I和采用合成方法得到的化合物III的晶体结构，并用分子力学计算方法分别模建化合物II和IV的立体结构。

To be fair, we are starting to see that happen with other new MMORPGs now--like the upcoming Ultima X.

公平来说，我们开始观察现在其他的新的MMORPG会是怎样的---像最新将要出现的Ultima X。

Soon after, he can be filled in on the details: that the cell difference is due to an additional X chromosome, which is responsible for his undersized testes and any reading difficulties he may have.

不久之后，他可以填补的有关细节：细胞不同的是，由于额外的X染色体，这是负责他的不足睾丸和任何阅读困难，他可能有。

Two closest single-qubit states could be diagonalized by the same unitary matrix, which helps find the relative entropy of entanglement of a two-qubit \lq\lq X\rq\rq ~ state.

两个相隔最近的单比特量子态可以被同一个酉矩阵对角化，这一结论在文章中被严格证明。这一结论对求"X"型两比特量子态的相对熵纠缠很有帮助。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。