The star varies in brightness by about three magnitudes.

星体的亮度大约分三个星等。

An analog signal is composed of four basic components: DC and AC magnitudes, frequency, and phase.

模拟信号由直流和交流分量、频率和相位四部分组成。

These magnitudes make sense.

这样的幅度有其道理。

With some magnitudes this condition is fulfilled.

与一些大小，这个条件被完成。

The measurement accuracy was improved by several magnitudes.

测量准确度提高了几个数量级。

Quake locations and magnitudes are indicated by black circles.

地震的发生地和震级用黑色的圆圈表示。

That's because quake magnitudes are calculated on a logarithmic scale.

这是因为地震级数是按对数计算的。

Astronomers use a system of magnitudes to indicate how bright an object is.

天文学家利用亮度系统来标识一个物体有多亮。

Why are there often different magnitudes reported for the same earthquake?

为什么会经常发现同一个地震会报道成不同的量级呢？

One of the easiest ways to compare galaxies is to compare their magnitudes.

比较星系的最简单方法之一是比较它们的星等。

This results in reduced power consumption of several orders of magnitudes .

在几个数量的程度降低功耗这样的结果。

The magnitudes and directions of the main strain are expressed as an ellipsoid.

主应变的大小和方向可以表示为一个椭球体。

Not all geometrical magnitudes of the same kind are commensurable with one another.

同类几何量中彼此之间并非都是可通约的。

It can reach magnitudes of -4.7, which is much brighter than the next planet, Jupiter.

它可以达到- 4.7星等，而这远远低于未来地球，木星光明。

However, many go undetected because they hit remote areas or have very small magnitudes.

但由于许多地震发生在偏远地区抑或地震级数很小，他们就未报道。

The check results of occurrence times and magnitudes of several large earthquakes were satisfactory.

对一些大地震的发生时段及震级的预测检验效果较好。

You can safely assume that the CPU, memory, and disk are orders of magnitudes faster than the network.

可以放心地假设CPU、内存和硬盘的速度比网络快得多。

USGS also recorded two strong aftershocks — of magnitudes 5.2 and 5.3 — within half an hour of the quake.

地质调查局还记录了半小时内两次5.2和5.3级的强烈余震。

Q: it is reported that the Solomon Islands suffered from an earthquake of 8.0 magnitudes on the Richer scale.

问：据报道，所罗门群岛发生了8.0级的地震。

Attribute data may be either quantitative and expressed numerically or qualitative without numerical magnitudes.

属性资料可能是用数字表达或没有数字的量化。

So clearly, we've got signs and magnitudes dH and if we wanted to put delta u there, similar things would happen.

我们得到了自由焓的变化,和和熵增dS的符号与大小，of，delta，H，and，delta，S，如果我们想要计算内能的变化，会发生同样的事情。

Two more earthquakes -- measuring 6.0 and 5.4 magnitudes -- happened nearby over the next hour, the USGS reported.

美国地质局报道在强震发生之后的一个小时内同时发生了震级分别为6.0和5.4级的地震。

The variance of the frequency estimates of indirect method is 2 ~ 3 magnitudes less than that of the direct method.

模拟频率间接估计算法的估计方差比直接估计算法的方差要小2 ~ 3个数量级。

The relative magnitudes of these components change with season and their amplitudes have definite latitudinal distributions.

这些成分的相对大小随季节而变，场的变幅有特定的纬度分布。

The MMS is now the scale used to estimate magnitudes for all modern large earthquakes by the United States Geological Survey.

MMS是目前用于所有现代大地震的震级估计由美国地质调查局的规模。

The United States Geological Survey recorded 90 quakes off the easterncoast on Saturday alone, five of them with magnitudes larger than 6.0.

仅周六一天，美国地质调查局在东海岸沿海就记录了90次余震，其中五次震级超过6.0级。

Results indicate that RPC possesses very low porosity and its air permeability is lower by 1-2 magnitudes than that of conventional concrete.

结果表明：RPC具有非常低的孔隙率，其气体渗透系数比传统混凝土的低1 ~ 2个数量级。

But no tsunami followed Wednesday's aftershocks, the magnitudes of which ran from 5.9 to 6.3 in preliminary readings by the U.S. Geological Survey.

但周三余震后并没有发生海啸。据美国地质调查局(u.s. Geological Survey)初步测定，余震震级从5.9到6.3级不等。