apparent magnitude 中文意思是什麼
apparent magnitude
解釋
藍等-
For example, the apparent magnitude of our sun is - 26. 8, but its absolute magnitude is just 4. 8. the absolute magnitude describes the
例如太陽的視星等為- 26 . 9等，但它的絕對星等只有4 . 8等。 -
Two stars have the same absolute magnitude. one is thousand times farther away than the other. what is the difference in apparent magnitudes ? which magnitude larger
兩顆星具有相同的絕對星等，其中的一顆比另一顆距離遠1000倍，它們的目視星等有何不同？哪一個的星等數值大？ -
The longer the period, the brighter the star is. thus, by measuring the period of a cepheid variable, we know its absolute magnitude, hence, we can tell how far it is away by comparing with its apparent magnitude
所以，只要知道某一造父變星的周期，我們便可得知它的絕對星等，只要和它的視星等作比較，便可以求得它和我們的距離。 -
We have to use some other methods to measure the luminosity or equivalently the absolute magnitude of the cepheid variable. since we can readily measure the apparent magnitude of a cepheid variable, to measure the luminosity means measuring the distance. we use some distance measurement methods, for example, parallax, to determine the relation
要弄清這個關系，我們要知道不同造父變星的光度和光變周期數據，量度光變周期當然不是問題，但要得知一顆恆星的光度，我們首先要得知它的距離，這時便須藉助好像視差法等其他量度天體距離的方法。 -
This is the apparent magnitude of an object at some standard distance from us. this standard distance is chosen to be about 32 light years 10 parsecs, see below
絕對星等是恆星距離為約32光年或10秒差距請參閱下一節時的星等。 -
Deferring to historical custom, astronomers, measure the apparent brightness of stars through the magnitude scale, a very confusing way.
按照歷史習慣，天文學家用星等標這種容易使人混淆的方法來度量恆星的視亮度。 -
Thus, the apparent magnitude is not an intrinsic property of the star
因此，視星等並不足以顯示出恆星的內在特質。 -
By that time, the apparent diameter of mars will be as large as 25. 1 arc seconds. shining at - 2. 9 magnitude, it will become the brightest star in the night sky for weeks
那時火星視直徑達25 . 1角秒，光度達- 2 . 9等，成為當時夜空中最光亮的星。 -
A reversible changes happens when exposed to an external electric field. apparent suspension viscosities and shear stress can increase several orders of magnitude
當對它施加電場時，其粘度和剪切強度瞬間變化幾個數量級，表現出固體的性質，具有快速可逆的特點。 -
Apparent suspension viscosities and shear stress can increase several orders of magnitude. the kaolinite - organic matter intercalation compound is a new material with properties both of kaolinite and organic matter
當對它施加電場時，其粘度、剪切強度瞬間變化幾個數量級，表現出固體的性質，具有快速可逆的特點。 -
The research indicate that the structured soft clay has below several characteristic, the viscous strain is produced during the stage of primary consolidation and of second consolidation, and in the prophase, the relation of stress - strain - strain rate is unique, so the form of constitutive model, such as, f ( v ', e ) = 0, f ( ' v, e, t ) = 0, ca n ' t describe strain behavior of soil skeleton rationally ; the time - dependent properties involve three aspects, in addition the time - dependent strain, apparent preconsolidation pressures that depend on strain rate, and the effect of creep compression on apparent preconsolidation pressures ; because of holding structural strength, the mechanics characteristic is determined by the magnitude of stress, and the compression curve is composed of several sections. by combining structural yield stress and it ' s characteristics with the improved time line model, a new one - dimensional elastic visco - plastic consolidation model is established
研究結果表明，結構性土的固結過程具有以下特性：主固結和次固結階段都包含有因土骨架的粘滯性移動而產生的變形，而且在正常固結階段，存在應力?應變?應變速率的唯一性， f （ _ v ， e ） = 0 、 f （ _ v ， e ， t ） = 0形式的本構關系不足以描述土骨架的變形行為；固結壓縮過程中的時間效應包括三個方面的內容，除了應力應變關系與時間相關外，還包括粘滯性變形引起表觀前期固結壓力增加和屈服應力的應變速率效應；軟土的結構性使其力學特性與應力水平相關，壓縮曲線具有分段性。 -
Based on the new model, the influences caused by soil structure, apparent preconsolidation pressure, the re - compression index, the coefficient of secondary compression, the magnitude of loading, the coefficient of permeability, the rate of loading, the thickness of clay, the self - weight, the layered property etc, in the process consolidation of soil with structure, are analyzed in detail. the difference between the present model and yin & graham model was also given
基於本文新建模型，分析論述土結構性、表觀前期固結壓力、再壓縮系數、次固結系數、荷載增量大小、滲透系數、加荷速率、固結層厚度、自重應力隨深度變化和土體成層性等對土固結的影響，比較本文模型與yin & graham模型的異同，闡述土結構性和流變性對軟土固結壓縮行為的影響。
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