反旋

On the basis of the dispersion relation, we investigated the properties of nonlinear surface waves. It is shown that there exist backward surface waves, with the phase velocity and group velocity opposite in direction. For transverse electric waves, the nonlinear wave equation is transformed into Bernoulli equation, and the exact solutions of magnetic fields are obtained.

在色散关系的基础上研究了非线性旋磁表面波的频率特性，揭示了该系统能激发后向表面波，其群速度与相速度反向；将反铁磁晶体中TE表面波满足的非线性波动方程变形为伯努利方程，用反函数形式给出了表面波磁场的精确解。

But there had lower control effets to Convolvulus arvensis, the average number of trees and fresh weight control effect were 50.3 and 85.5%, respectively.

对田旋花的防效较对藜、大刺儿菜、猪毛菜、反枝苋防效偏低，药后30d的平均株防效和鲜重防效分别为50.3%和85.5%。

Although the isoscalarmeson exchange currents contribute little to cross section, they have large effectto 〓/〓, which is the ratio of two structure functions of the deuteron.

尽管同位旋标量的π-反冲流、π-对流对截面的贡献不大，但对结构函数之比〓／〓却起很大的作用。

Repeated forceful contractions of wrist extensors or forearm supinator result in tensile stress over the lateral epicondyle. The repeated forces are due to (1) inadequate muscle strength, power, endurance, and flexibility of the forearm muscles,(2) inadequate techniques of tennis playing, and (3) inadequate equipments.

其受伤机制为过度强烈或反覆太多的腕伸肌及外旋肌收缩造成对肘外踝的张应力；而(1)肌肉的肌力、爆发力、持久力、柔软度不足(2)不适当的系球技巧(3)不适当的器材等都是使外髁张压力增加的原因。

Thus saying, from her side the fatal Key, Sad instrument of all our woe, she took; And towards the Gate rouling her bestial train, Forthwith the huge Porcullis high up drew, Which but her self not all the Stygian powers [ 875 ] Could once have mov'd; then in the key-hole turns Th' intricate wards, and every Bolt and Bar Of massie Iron or sollid Rock with ease Unfast'ns: on a sudden op'n flie With impetuous recoile and jarring sound [ 880 ] Th' infernal dores, and on thir hinges grate Harsh Thunder, that the lowest bottom shook Of Erebus.

V1：她边说边从身边取出那不祥的钥匙――人间万祸的媒介，向着大门转动她的兽尾，巨大的格子吊闸，被高高地拔起来，那吊闸坚固、沉重，除了她，即使用全地狱天使的力量也动弹不了它；随后她把钥匙放进锁眼里，旋开了复杂的弹簧，轻轻松开所有铁铸石炼的门鼻、门闩，轰隆一声，地狱的大门忽然开了，由于用力过猛，所以造成反跳，使得门键上的粗厉声响如雷鸣，连地狱最深的底层也被震动了。

The complexes were characterized with variable temperature magnetic susceptibility (4-300 K). The exchange integral J =-4.39 cm-1 for [CuCo(NO2-Phen)2] and -3.59cm-1 for [CuCo(NO2-Phen)2]. A weak antiferromagnetic superexchange interaction operates between the metal ions.

测定了配合物(4-300K)的变温磁化率，并用最小二乘法和自旋Hamiltonian算符，H=2JS1.S2-DSzl导出的磁方程拟合，求得交换参数为J=-4.39和-3.59cm^-^1，表明两个Cu-Co双核配合物中有弱的反铁磁性超交换相互作用。

In part one,because there is no long-range order in one-dimensional(1D)system,generalized second-order Green's function theory isused to 1D spin-1 antiferromagnetic spin chain.The Haldane gapin the excitation spectrum appears naturally in the analytical re-sult;When k is zero,there is a gap 2Δ.

第一部分中，在长程序为零的条件下，我们应用推广的二级格林函数理论，讨论了自旋为1的反铁磁一维链，Haldane能隙在解析结果中自然地得出，在k＝0时，能谱中存在一个2Δ能隙，Δ＝0.5J。

In this article, the BINIDCT algorithm, a fast approximation of the Discrete Cosine Inverse Transform and its efficient VLSI architectures for hardware implementations with Wishbone bus are presented.

1引言离散余旋变换(Discrete Cosine Transform，DCT)和其反变换(Inverse Discrete Cosine Trans-form，IDCT)广泛地应用于图像和视频压缩、解压缩领域中，其中包括JPEG、MPEG1-2、H.26x、MPEG4等图像标准中。

To improve accuracy of detection of current direction, components of magnetizing current and torque current are transformed into two-phase stationary frame. Therefore compensating voltage vector can be decided according to the sector the current vector is locating.

为了提高电流极性检测的准确性，利用旋转轴系中的励磁电流和转矩电流分量经过坐标反变换，判断电流在两相静止轴系所处的扇区来决定需要施加的补偿电压。

The system also changes from paramagnetism to a long-range antiferromagnetism.

在此相变温度之下，自旋系统也从顺磁变化到三维长程反铁磁。

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。