比如，可以通过压缩来节约介质空间；或者出于安全的原因，通过克隆来复制存档；再或者将数据恢复到其他服务器实例中。
For example, you can use compression to save media space, use cloning to duplicate the archive for safety reasons, or restore the data onto another server instance.
例如，如果备份5 个表空间，那么可以选择只恢复其介质出现故障的那个表空间。
For example, if you back up five table spaces, you can choose to restore just one table space whose media failed .
它允许您在只读介质—通常是空间有限的介质—上运行操作系统，同时您可全面访问系统的其余部分。
It lets you run the operating system from read-only - and often space-constrained - media, while giving you full access to the rest of the system.
因此，异向介质大爆炸模型中光的路径代表了一个粒子处于空间和时间之中的寿命，这就是物理学家称之为“世界线”的东西。
Therefore, to the big bang model different medium in the light path represents a particle in space and time, this is the life among physicists call "world line" things.
他们想象存在一种充满整个空间的物理介质——以太。
They imagined the existence of a physical medium - the ether - filling all of space.
在这种近似中，突出地强调了辐射热传导的作用，即认为介质中的温度分布由于热传导极强而可以近似地看成与空间无关。
In this approximation, it is assumed that the effect of radiative heat transfer would be so strong that the temperature of the medium could be regarded as uniform.
核磁共振技术是一种有力而安全的用于获取介质的空间分辨信息的方法。
Nuclear magnetic resonance is a powerful, noninvasive method which can be used to obtain spatially resolved information about media.
等离子通过异向介质的平面路径与大规模粒子通过闵可夫斯基空间的平面路径的数学描述一致，其中都包含了空间和时间的维度。
Plasma through the plane to medium vision with massive particles through path minkowski space plane path of the mathematical description of consistent, contain the space and time dimension.
可以执行在线表空间备份，并且用这些备份来恢复由介质损坏的表空间。
You can perform online tablespace backups, and use these backups to restore a tablespace following media failure.
空间电荷的测量对于电介质材料的研究有重要的意义。
Space charge measurement is very important to study of dielectric material.
本论文对飞秒脉冲光束通过自由空间、线性色散介质和单透镜的传输特性作了深入研究。
The present thesis is devoted to studying the propagation of femtosecond pulsed beams in free space, linear dispersive media, and through lenses.
其次，在2.5维空间，用有限元数值模拟方法模拟了裂隙各向异性介质波场，结果用波场切片做了显示。
Then, the finite element method is used for synthetic in 2.5d space anisotropic media containing cracks. The results are showed by time snapshot.
根据这种观点，多层介质波导中波的传播和散射可以归结为多维空间向量的坐标变换，并可用传输线和网络表示。
According to this point of view the transmission and scattering in multilayer dielectric waveguides can be regarded as coordinate transformation of a vector in ann-dimensional vector space.
利用随机介质理论，建立了不同倾角煤层的采空区所对应的地表空间变形规律。
Using the theory of stochastic dielectric, the laws of deformation in space of different Angle in coal layers have been deduced.
数值结果表明本文运用的方法对分析垂直于地面以及有耗或无耗介质半空间上的线天线是有效的。
Numerical results show that the method proposed in this paper is accurate and effective for the vertical thin-wire antennas above lossy or lossless dielectric half space.
实验结果表明，空间电荷在固体介质的预击穿过程中起重要作用。
Experimental results show that space charges play an important role in the Pre-breakdown of solid dielectrics.
该文论述了拓扑空间(组)的同伦等价变换在有序介质状态和缺陷的拓扑分类中的应用问题。
In this paper the application of homotopy equivalence transformation of topological space sets to the topological classification of states and defects in ordered media is discussed.
该现象可以用高斯光束通过介质时产生的空间自相位调制解释。
This phenomenon can be explained by the spatial self-phase modulation of the Gaussian beam passing through the nonlinear medium.
孔隙介质渗透率与孔隙空间分布的几何结构密切相关。
Permeability of porous media is closely related to the geometrical structure of spatial distribution of pores.
给出了水平均质介质平面问题与空间问题空源作用的一般解答。
The paper presents the general solutions of influence of void sources on subsidence in horizontal homogeneous media for plane and space problems.
使用离散复镜像方法(DCIM)快速得到平面分层介质的空间域的闭式格林函数，避免了费时的索末菲尔德积分。
To avoid calculating the time-consuming Sommerfeld's integrals, the discrete complex image method (DCIM) is employed to obtain spatial domain closed-form Greens function for planar-layered media.
渗透系数的空间变异性使得隧道开挖后围岩应力有明显的非连续性，对裂隙介质的耦合过程起着重要作用。
The spatial variability in permeability plays an important role in the coupled hydro-mechanical processes of the fractured rock mass and induces a discontinuous distribution of principal stresses.
从辐射全交换面积的概念出发，推导了封闭空间边界为灰体，介质为非灰气体的辐射全交换面积计算式。
Based on the original conception of total radiant exchange area, the total radiant exchange areas for non-gray medium with gray enclosure are derived.
结果表明，在折射率为抛物分布的克尔介质平板中，空间孤子的波形将进一步变陡。
The result shows that in parabolic profile slab, the form of a spatial soliton will become further steep.
在不接触电法测量中，为了清晰精确地观测发射机发出的经过空间和地下介质耦合的微弱信号，设计了不接触电法测量仪器的嵌入式智能化系统。
In untouched electronic measurement, the scheme of designing the intelligent instrument is described so that the weak signal which is transmitted by transmitter and coupled by medium is measured.
本文考虑了隧道结构与介质的耦合，提出了隧道空间轴对称变形的计算方法，可供设计人员应用。
In this paper, considering coupled problems of tunnel structures with masses, we introduce a method for calculation of space axial symmetrical deformations of tunnels, which can be used by designers.
分析研究了相干光与具有空间反演对称非线性介质作用的压缩性质。
An analytical approach is adopted for the calculation of squeezed property of coherent light interacting with a nonlinear medium of inversion symmetry.
最后对现场实测资料进行了套管-地层环空间内介质的波阻抗定量反演与成像。
Wave impedance inversion and imaging of the medium between the casing and the formation based on the practical data of an oil field are carried out.
最后对现场实测资料进行了套管-地层环空间内介质的波阻抗定量反演与成像。
Wave impedance inversion and imaging of the medium between the casing and the formation based on the practical data of an oil field are carried out.
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