路

Based on the theory of uniform transmission line and four-terminal net circuit, this paper presents a simulation model of ZPW-2000 jointless track circuit shunt current. A kind of numerical algorithm of shunt current is established with MATLAB.

运用均匀传输线和电路四端网理论，建立了ZPW-2000无绝缘轨道电路分路电流的计算模型，利用MATLAB软件实现了分路电流的数值算法。

In light of the present study's findings, we suggest that the technique of anterior decompression, strut grafting, and anterior instrumentation is an effective method for the treatment of post-traumatic kyphotic deformity and that the success of the technique depends on the time from trauma to operation and the severity of baseline deformity, regardless of the type of instrumentation.

从目前的研究发现来看，我们建议，前路减压支撑性植骨，前路内固定的方法是治疗创伤后驼背畸形的有效手段，而且这一方法的成功取决于从受伤后到手术的时间，原始畸形的严重程度等，但与内固定的类型无关。

In light of the present study's findings, we suggest that the technique of anterior decompression, strut grafting, and anterior instrumentation is an effectie method for the treatment of post-traumatic kyphotic deformity and that the success of the technique depends on the time from trauma to operation and the seerity of baseline deformity, regardless of the type of instrumentation.

从目前的研究发现来看，我们建议，前路减压支撑性植骨，前路内固定的方法是治疗创伤后驼背畸形的有效手段，而且这一方法的成功取决于从受伤后到手术的时间，原始畸形的严重程度等，但与内固定的类型无关。

Three important conclusions are achieved: 1 By analyzing the demand for spatial resolution of recording medium in different digital holographic recording setups, it shows that lensless Fourier transform holography can relax the requirement of spatial resolution and use the full spatial bandwidth of the CCD sensor. 2 Because of the differences of spatial resolution of image planes in different directions, reconstructed images can be relatively extended in the direction of high spatial resolution and reduced in the direction of the low one. 3 Lateral resolution of the reconstructed images is mainly determined by the highest spatial frequency of digital holograms recorded by CCD, and increases with the larger CCD size, the higher spatial resolution of the CCD sensor, and the shorter recording distance.

通过分析几种不同数字全息记录光路对记录介质空间分辨率的要求表明，无透镜傅里叶变换全息光路对CCD的空间分辨率要求最低，最能充分利用CCD的带宽；再现像面的空间分辨率在不同方向上的不一致，会导致再现像在空间分辨率高的方向上相对展宽，而在空间分辨率低的方向上相对压缩；再现像的横向分辨率主要由CCD所能记录的物体的最高空间频率决定，它随CCD的尺寸和空间分辨率的提高及记录距离D的减小而提高。

The simulative results verify theoretic analysis is proper. lensless Fourier holography ; off-axis ;3D reconstruction ; phase distortion

目前，主要有采用同轴记录光路结合相移技术的同轴相移数字全息川，和采用离轴记录光路结

Then the first time you heard people talking about "Their Lewie"- not know ing it wasn't a dog or an uncle, but a Louis.

然后，你第一次听到人们谈论&他们Lewie&-不知道这是不是安泰狗或叔叔，但正如路易威登路易斯。

Yes, your path lies open before you, but you have cut off my return, and left me stripped naked before the world with its lidless eyes staring night and day.

是的，你的路在你面前延伸，但你却切断了我的归路，把我赤裸裸地留在这无睑的、日夜瞪视的世界前。

When surgery is indicated after central cord injury in the stable spondylotic spine, it is the overall cervical spinal alignment and the number of levels affected that determine the surgical approach.30 When the spine is lordotic, and particularly when there are multiple levels of compression; a posterior approach, either a laminectomy and fusion or a cervical laminoplasty are recommended approaches.28 If the spine is neutral or slightly kyphotic, then occasionally, after a posterior laminectomy, lordosis may be achieved with intraoperative positioning and maintained with posterior lateral mass fixation and fusion.

当不伴有颈椎不稳的颈椎病并颈髓中心管损伤患者需要手术治疗时，整个颈椎的序列和受累的节段决定了手术入路的选择。颈椎处于前凸状态，尤其是多节段颈髓均有受压时，建议采用后方入路进行全椎板切除融合或颈椎椎板成形术。假如颈椎处于中立位或稍微后凸时，有时通过后方的全椎板切除，术中复位和侧块螺钉固定融合，可以恢复颈椎的前凸。

Combined intra-extracranial approach, which provides excellent exposure and convenient repairing of skull base deficit is an ideal operation for meningoencephalocele.

颅鼻联合入路可提供良好视野，易找到并修复颅底缺损，便于切除颅外膨出部及一期整形，是治疗脑膜脑膨出的理想手术入路。

In this paper, a link stability model of satellite networks is presented. Based on this model, an intersatellite link design strategy is introduced for a LEO/MEO satellite network.

综合考虑这些影响因素，提出了一种衡量星间链路稳定性的模型，并基于此模型给出了LEO/MEO双层卫星网的星间链路设计方案。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。