velocities

If that were true for galaxies, the most distant visible objects in the sky would be receding at velocities just shy of the speed of light.

如果这对于星系也是正确的，那麽天空中可见的最遥远物体，就会是那些远离速度仅仅略小于光速的天体。

The extreme youth of at least one of these stars is indicated by the presence of a stream of gas moving at high velocities.

其中至少有一个非常年轻的恒星因高速运动的气体流而被暴露出来。

The suspended sediment of natural streams is usually made up of grains with a broad spectrum of sizes and fall velocities.

天然河流的悬沙，通常系由各种大小尺寸和沉速的粒子组成。

Despite these lower velocities, there appeared to be evidence for the operation of impact-abrasion phenomena in such situations.

尽管有这些速度低，出现了以证据为操作冲击磨损现象，在这种形势。这些证据分为若干领域，下面讨论。

All this comes out of Doppler shift measurements: the velocities, the radii, the periods and even the masses of these objects.

顿移测量法得到，速度，半径：，周期，以及，这些物体的质量，如果作为观察者。

We can measure the speeds of these galaxies, their orbital velocities, and figure out how much mass is in this cluster.

我们可以测量这些星系的速率，它们的轨道速度，并算出星系团中有多少质量。

Changes in sensory conduction velocities across the wrist appear to be the most sensitive electrophysiologic indicators of the condition.

变化的感觉传导速度在手腕似乎是最敏感的电生理指标的状况。

If widespread, such large space velocities could make a distribution typical of young stars mimic that of old stars.

如果广泛存在，这样大的空间速度，就可能使年青星的典型分布与老星分布相似。

From the experiment results and the normalization results, the surface recombination velocities of silicon pn junction were obtained.

通过测量结果和计算结果的归一化比较，获得了其表面复合速率。

As a whole, the groups with BRGs tended to have more galaxies which were more luminous, and had a greater variety of velocities.

总的来说，含有BRG的星系群倾向于含有更多的明亮星系，在周转速度上的差异也更大。

Such low velocities are usually seen only near the surface in a zone called the weathered layer or the low-velocity layer.

这样低的速度通常只在地表附近称为风化层或低速层的地带中见到。

The Splitting of a light beam into two perpendicular polarization components, which travel at different velocities through a material.

一束光通过两个垂直的偏振元件，在光学材料中分为两束光，它们的传播速度不同。

Yet Rubin's observations found no drop-off at all in the stars' velocities further out in a galaxy.

然而鲁宾的观测结果则表明，远离星系中心的全部星体的速率都没有降低。

With velocities of this magnitude at the outer edge of galaxies, the stars should be flung out of their orbits.

在如此重量（星球）级别下保持这种速率的话，星系边缘的星球都将被甩出轨道。

The interactive processes of a powder particle with various velocities and substrate were investigated through numerical simulation.

针对单个粉末粒子以不同速度与基板的相互作用过程进行数值模拟分析。

In contrast, Titan orbits comparatively far from Saturn, where impact velocities are slower and an atmosphere can survive.

相反的，土卫六是以相对较远的距离环绕土星，此处撞击速度较慢，所以大气得以保留下来。

The longitudinal grooves seen in the foreground are thought to be due to differential shear and lateral spreading at high velocities.

在前景突出部分看到的纵向沟纹，被认为是由剪断层（differentialshear）以及高速的横向扩散所造成的。

The hydrometric pendulum is sometimes used to determine flow velocities in open channels.

测流速的摆锤有时用于确定明渠中的流速。

Such amplitude variations would be predicted on the basis of principles governing seismic velocities in heterogeneous media.

按照在非均匀介质内确定地震速度的原理，应能预测这样的振幅变化。

Every rock property, e. g. , permeability, compressibility, and acoustic velocities, has its own effective stress coefficient.

每项岩石特性，比如渗透性、压缩性和声速等，均有其自己的有效应力系数。