查询词典 free space

Based on the Rayleigh-Sommerfeld diffraction integral and complex analytical signal representation,the free-space propagation equation and its Fourier spectrum for ultrashort chirped pulsed Gaussian beams are derived,and the far-field analytical electric field and spatial intensity are presented.

基于瑞利-索末菲衍射积分，使用复解析信号法推导出了啁啾脉冲高斯光束在自由空间中的传输方程及其傅里叶谱，给出了远场的光场和空间光强的解析式，研究了啁啾参数C对脉冲光束传输的影响。

Based on the Lagrangian equation with dissipation function, the motion equation of a microbubble with shell is obtained, and the dynamic characteristics of microbubble with shell in free space are studied. It shows that the inner and outer maximum radii of the microbubble increase when the acoustic pressure and its initial radius increase, as well as when the ultrasonic frequency decreases.

理论上利用有耗散函数的Lagrange方程，建立了有壳微泡的R运动方程，开展了自由空间中有壳微泡动力学特性的研究，表明微泡内外半径增量随声压的增大、超声频率的降低、初始内径的增大及壳厚的减薄而迅速增大。

Laser beam' s acqusition, pointing and tracking is one of key technologies of free space optical communication.

光束的捕获、对准和跟踪是自由空间光通信中必须解决的关键技术之一。

In this paper, the propagation and focus properties for several modes describing hollow beam are analyzed, and the focus properties for hollow gaussian mode are particularly discussed. Furthermore, a new mode, high-order Bessel-Gauss mode, is put forward to describe hollow beams. The results for high order Bessel-Gauss beams propagating through lens focusing system and free space are derived by terms of Collins integral formula.

本文分析了几种描述空心光束数学模型的传输特性和聚焦特性，着重讨论了描述非中空光束的数学模型的聚焦特性；同时提出了一种描述完全中空的空心光束的新模型――高阶贝赛耳高斯模型，并且运用Collins积分公式，分析了这种新模型的空心光束的传输特性和聚焦特性。

The general analytical expression of the deformed high-order Bessel beam and its propagation properties of in self-focusing lens self-imaging process in free space wer.

从产生高阶贝塞尔光束的典型光路着手，通过将高阶贝塞尔光束分解为高阶贝塞尔余弦光束和高阶贝塞尔正弦光束，利用柱坐标下的Collins公式，分析了变形高阶贝塞尔光束的解析表达式和在自聚焦透镜中的传播。

This means that for every megabyte that you want to back up, you have to have that much free space on your drive (for the .dmg to be created).

这意味着，每兆字节，您要备份，你必须有很多自由空间的驱动器。

With Mutilate's disk free space wiper, you can even use Mutilate to destroy previously deleted files on your hard drive.

与致残的磁盘可用空间雨刮器，您甚至可以使用致残摧毁先前已删除的档案在您的电脑硬盘。

To create a new partition, type a destination partition one greater than the existing number of partitions, if there is enough free space.

若要创建新的分区，如果有足够大的可用空间，则键入一个比现有分区大1的目标分区。

In simple view mode, only the filename is displayed and thus each entry takes only one line of the screen:In extended view,the date of modification and size of the file are added (date and number of entries for a directory, size and free space for a drive):ShortcutsLong press on the numerical keyboard will also quickly move you to 9 predefined locations of the file system:1: C:2: E:3: Z:4: C:\Logs5: C:\Data6: C:\System7: E:\8: E:\Data9: E:\SystemThere is currently no way to modify customize these locations but we plan to introduce this in the future.

在简单的视野模态中，只有文件名被显示和如此每个进入拿只有荧屏的一条线：在广大的视野、修正的日期内和文件的大小被增加(日期和进入的数字为一个目录，大小和自由的空间为驾驶)：ShortcutsLong 杂志报纸在数字的键盘上也将会很快地移动你到文件系统的 9个被预先定义的位置：1： C：2： E：3： Z：4： C：\ Logs 5： C：\ Data6： C：\ System7： E：\8： E：\ Data9： E：\ SystemThere 是现在没有方法修正定制这些位置但是我们计划未来介绍这。

The characteristics of the waves guided along a plane interface which separates a semi-infinite region of free space from that of a magnetoionic medium are investigated for the case in which the static magnetic field is oriented perpendicular to the plane interface.

沿平面界面分开的磁离子中，一个半区的空间是无限的，其中静态磁场导向的垂直平面接口个案调查指导波的特点。

But we don't care about Battlegrounds.

但我们并不在乎沙场中的显露。

Ah! don't mention it, the butcher's shop is a horror.

啊！不用提了。提到肉，真是糟透了。