各向异性

The anisotropic behaviour of their thermal expansion may bemarkedly reduced by a partial substitution of Cu for Co and a shift of its com-position toward the Co enriched 2-17 phase region. Noticeably, both SmCo_(0.80Cu_(0.14)Fe_(0.06), and SmCo_(0.87Cu_(0.13)_8 are almost completely isotropic. It seems thatthey are the ideal materials for radially oriented toroids of best performace.

实验发现以铜取代部分的钴，以及成分移向富钴的2-17相区，都使热膨胀各向异性特性明显降低，特别是SmCo_(0.80Cu_(0.14)Fe_(0.06)_7和SmCo_(0.87Cu_(0.13)_8二者几乎是完全各向同性的，是制备高性能辐向磁体的理想材料。

The polarization spectrometer could measure X-ray lines radiated by plasma in the directions of vertical and horizontal.

为了研究等离子体各向异性及确定高温等离子体中电子束的存在，研制了X射线极化晶体谱仪，探讨了极化光谱学的理论，推演了X射线极化度的计算方法。

ABSTRACT This thesis is a study of FDTD (Finite-Difference Time-Domain) method and its application to the problems of electromagnetic scatt...

本论文论述了时域有限差分法以及该方法应用于各向异性复合材料散射问题仿真的研究。

Based on the resonance characteristics of the back scatt ering RCS in frequency domain and the transient waveform of the back scattered e lectric field in time domain, a reconstruction scheme for recovering the transve rse permittivity and conductivity for an anisotropic plate is proposed.

根据各向异性介质板后向散射与入射电磁波极化方向有关的特点，利用其后向RCS的谐振特性和后向散射场的时域波形特点反演有耗介质板的横向介电系数和电导率。

Radiative intensity. DRESOR method. anisotropic scattering. plane-parallel media.

辐射强度， DRESOR 法，各向异性散射，散射分布因子，平行平板介质

Analysis of eddy current in slotted plate utilizing crack element.

张济世等。各向异性媒质中三维涡流场的等效源法，清华大学学报，19971

The contents of this dissertation are involved in studies on quasi steady-state condition of a slow speed-varying rotor system, gain-scheduling control of a quasi steady-state rotor active balancing system, adaptive control of active balancing for a fast speed-varying rotor with actuator time delay and adaptive control of active balancing for a fast speed-varying rotor with actuator saturation. The rotors to be studied include a Jeffcott rotor, a Jeffcott rotor with anisotropic bearings, a flexible rotor with single collocated balancing plane (actuator plane and measuring plane are almost the same one) and a flexible rotor with multiple collocated balancing planes.

研究的内容涉及慢变速转子的准稳态条件、变速准稳态转子主动平衡系统的增益调度控制、带作动器时迟的快变速转子主动平衡系统的自适应控制与带作动器饱和的快变速转子主动平衡系统的自适应控制，转子类型包括Jeffcott转子、轴承各向异性的Jeffcott转子、单并置平衡平面(作动器和测量平面几乎在同一个平面)的柔性转子和多并置平衡平面的柔性转子。

By using CP-TOSS NMR method to suppress the spinning sidebands, 13C isotropic chemical shift of the above complexes was thus obtained. While in the 2D-PASS NMR spectra, spinning sidebands related to chemical shift anisotropy remain and are well-separated according to their orders. The principal components of the 13C chemical shift tensors were then extracted by fitting the experimental intensities of 13C spinning sidebands with Mathematic programs.

利用边带完全压制的CP-TOSS谱图我们得到了样品中各不等价13C位的各向同性化学位移；利用边带完全分离的2D-PASS谱图(其中包含了各不等价位的化学位移各向异性信息)，并通过Mathematic程序包对2D-PASS谱图中完全分离的旋转边带强度进行拟合，得到了各不等价13C位的化学位移张量的主值分量。

The proof of the well-posed property, stability and the LBB condition are very difficult to deal with.

对于混合元方法来说，插值算子在各向异性网格下的适定性，稳定性以及LBB条件等验证工作都有和大的难度。

Otherwise, we use GPM to compute the reflection and transmission coefficient of loss anisotropic media.

另外，用广义传播矩阵法计算了分层有耗各向异性介质的反射和透射系数。

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。