开关现象

PPD患者普遍对安坦和金刚烷胺敏感，较少出现左旋多巴制剂所致的运动障碍、开关现象和剂末恶化。

The patients with PPD are usually sensitive to artane and to amantadine hydrochloride . Levodopa or levodopa preparations-induced movement disorders , on-off phenomenon and end of dose deterioration occur less in the patients with PPD .

左旋多巴的治疗可以明显改善患者的症状，但长期应用左旋多巴能引起盈亏现象、开关现象、运动障碍和精神症状等副作用。

Levodopa therapy has markedly improved the symptom of patients with PD , however , the long term use of levodopa could induce adverse reactions including the wearing-off phenomenon , on-off phenomenon , dyskinesia and psychiatric adverse effects .

然后研究了受截取椭圆高斯光束的分数Fourier变换，分析了受截取椭圆高斯光束焦移和焦开关现象的物理成因。

The fractional Fourier transform of the truncated elliptical Gaussian beam is investigated . The focal shift and focal switch of the truncated elliptical Gaussian beam are shown .

本文采用非线性法布里-珀罗腔的全光光学方法，在C（60）/C（70）薄膜中首次观测到双稳开关现象，其开关时间为10ns。

We have observed for the first time the phenomena of optical bistability-switching for the film of C60 / C70 with all-optical method of the nonlinear F-P cavity . The on-off time of optical switching is about 10 ns .

光束聚焦中的焦开关现象研究

Study of the Phenomenon of Focal Switch in Beams Focusing

着重研究相位倾斜对焦开关现象的影响。

The influence of tilted phase on the focal switch is also studied .

一类时滞捕食者&食饵模型的稳定性开关现象

The Stability Switches of a Class of Predator & prey Model with Time Delay

部分相干光经色差透镜聚焦后的光谱开关现象

The Phenomenon of Spectral Switch of Partially Coherent Light Focused by a Lens with Chromatic Aberration

内电路全部采用大功率继电器转换，避免了经常烧毁开关现象。

The internal circuit is made of high-power relay switching which avoiding the phenomena often burned .

本文研究了质子转移型有机分子7-羟基喹啉在皮秒激光脉冲作用下的光开关现象。

Optical switch phenomenon of7-hydroxyquinoline with excited state proton transfer effect was investigated using picosecond laser pulses .

值得一提的是，我们详细讨论了焦移、焦开关现象，以及部分相干平顶光束、部分相干面包圈光束、部分相干局域空心光束的产生过程。

The generation of partially coherent flat-top beams , partially coherent doughnut spots and partially coherent bottle beams has been investigated .

在氧化铅薄膜三层结构的电流&电压特性中发现了具有负电阻区的开关现象。

Switching phenomena with an associated negative resistance region have been observed in the current-voltage characteristics of lead oxide film sandwiches .

研究表明，当光束参数β>1时，聚焦余弦高斯光束会有焦开关现象出现。

It is shown that the focal switch of focused cosine-Gaussian beams can take place as the beam parameter β is larger than 1 .

结果表明，在相位奇异点处，高斯型光谱一分为二，出现光谱开关现象。

The results show that , at the points of phase singularities , the Gaussian spectrum is split into two lines , meanwhile the spectral switches occur .

研究结果还表明，在一定的条件下，光谱位移会发生快速变化，即发生了光谱开关现象。

The results also indicate that , at some conditions , the rapid change of the spectral shifts , i.e. , a spectral switch , takes place in the some points of the focused field .

结果吡贝地尔对运动波动的剂末现象、开关现象和痛性痉挛的有效比例分别为19／24、9／22和3／4，总有效率为62%。

Results The effective proportion of different fluctuating symptoms in end off dose , on off and cramp were 19 / 24,9 / 22 and 3 / 4 respectively . The total effective rate is 62 % .

本文以激光光束传输理论为基础，研究讨论了激光光束通过像散透镜聚焦后光束参数的改变，焦开关现象及光束整形等。

Based on the propagation theory of laser beams , the change of beam parameters , focal switch and beam shaping of laser beams after passing through an astigmatic lens are analysed in the present thesis . 1 .

详细研究了复宗量双曲余弦高斯光束通过像散透镜聚焦后的焦开关现象，分析了光束参数、像散参数、菲涅尔数及光学系统几何参数对焦开关现象的影响。

By changing the Fresnel number the focal switch can also be produced under certain conditions . 3 . The focal switch of elegant cosh Gaussian beams focused by an astigmatic lens is studied in detail and the influence of parameters on the focal switch are investigated .

激光触发GaAs光电导开关非线性现象的实验研究

Study of Non-linearity of Laser Triggered GaAs Photoconductive Switch

通过仿真计算，对不同阻尼控制规律下系统的幅频特性进行了对比；分析了在单自由度半主动悬挂模型中的开关颤振现象及其原因；

During the simulation , the characteristics of amplitude-frequncy for different damping control rules are compared , the tremble phenomenon due to the on-off control effect are analyzed .

高密度等离子体融断开关融蚀现象的粒子模拟研究

Particle simulation study of erosion phenomena in high-density plasma opening switch

真空开关重击穿现象的模拟试验研究

Analog Tests on Vacuum Interrupter Restrike

通过模拟柱体和流体之间的非线性耦合作用，成功地捕捉到了“锁定”、“拍”和“相位开关”等现象，并与试验数据相吻合。

By simulating the non-linear fluid-structure interaction , we successfully captured the " locked-in ", " beat " and " phase switch " phenomena , and the results agree well with available experimental results .

本文理论研究了内含等离子体的Fabry-Perot干涉仪的光学开关和双稳现象。

In this paper , the optical switching and bistability of a Fabry-Perot interferometer filled with plasma are studied theoretically .

主要研究了在100kA微秒级电流脉冲作用下气体火花开关电极物质喷射现象的成因及规律。

The experiment of mass jet distribution in gas spark gaps was carried out under microsecond hundred - kiloampere current pulse .