Visual surface brightness and radius of Da and non-DA white dwarfs

1、

It is gotten that the radiation temperature by visual brightness observer through comparison of the black-body temperature and the direct measurement of gray one.

通过比较等辐射量的黑体温度，测出灰体的视在亮度温度&辐射温度；

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2、

Application of the Visual Brightness in the Lighting Design of the Museum

视觉亮度在博物馆照明设计中的运用

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3、

Optical flow field is referred to the apparent motion of image brightness patterns. It can be obtained by adding constraints to solve the optical flow constraint equation.

光流场是指图像亮度模式的表观运动，可以通过添加限制条件来求解光流约束方程来获得。

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4、

Since the speed of light is constant, knowing how far away such a "standard candle" is ( calculated from its apparent brightness seen from Earth) is to know how long ago it exploded.

再加上光速是恒定的，知道这样一盏“标准蜡烛”离地球多远（根据地球上观测的视觉亮度计算得出）就能知道它是多久以前爆发的。

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5、

By gauging the redshift and apparent brightness of a large number of supernovae located at a variety of distances, researchers can create a record of the universe's expansion.

藉由调校大量位于不同距离的超新星红移和表观亮度，研究人员可造出一组宇宙膨胀的记录。

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6、

The distance to such an object can be worked out by comparing its apparent brightness with its known, absolute brightness.

通过比较表观亮度和已知的绝对亮度，即可得出该天体和我们的距离。

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7、

Deferring to historical custom, astronomers, measure the apparent brightness of stars through the magnitude scale, a very confusing way.

按照历史习惯，天文学家用星等标这种容易使人混淆的方法来度量恒星的视亮度。

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8、

The corresponding concept for apparent brightness is generally called a number count.

而视亮度的相应概念通常叫作计数。

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9、

Effect of chemical component, preparation conditions on the performance of the phosphor was studied by using TG-DTG, XRD and phosphor relative brightness meter.

借助TG，XRD，荧光粉相对亮度仪、荧光分光光度仪等手段系统研究了合成过程中原料化学组成及配比、合成条件对磷酸钡钙∶铈、锰发光性能的影响。

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10、

Development of new type of dampproof and brightening agent

新型防潮上光剂的研制

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11、

Development of new type of dampproof and brightening agent covered tunnels(ⅲ);

新型防潮上光剂的研制被覆坑道（Ⅲ类）；

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12、

The variety of paper brightening agent and its utilization

造纸增白剂的种类与应用

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13、

Application of membrane technology to production of brightening agent

膜技术在增白剂生产中的应用

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14、

Study on a new type of dyeing brightening agent in leather

一种新型皮革染色增艳剂的助染性研究

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15、

Result Method of Several Type of Liquid Optical Brightening Agent Test

几种液体增白剂性能试验

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16、

Introduce the result of several type of liquid Optical Brightening Agent ( OBA) test, commend the test method of OBA use for coating color.

介绍了几种液体增白剂的性能试验结果，及用于铜版纸涂料中的液体增白剂的选择试验方法。

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17、

The plating solution has good brightening and leveling power at high and middle current density area and the permitted solution temperature is up to 40 ℃ better than that for the dye-type process.

该工艺中、高电流密度区光亮整平性好，允许液温可达40℃，优于染料型工艺。

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18、

The results indicated that the mixture of fluorescent whitening agents, which were self-made, have a good brightening effect and can be used to whiten the polyester/ cotton fabric with one-step process.

实验表明：论文所研制的复配荧光增白剂具有良好的应用性能，可以使涤棉混纺织物通过一浴一步法增白工艺获得优异的增白效果。

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19、

The influences of main categories of optical brightener in the market on whiteness, detergency and fabric brightening effect of laundry powder were examined.

研究了用于洗衣粉的主要类型增白剂对粉体白度、去污性能和织物增白3个方面的影响。

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20、

The acting principle of flour brightener and the effective factors of brightening effect were analysed. The reasonable addition level of brightener and adding methods were put forward.

通过对面粉增白剂作用原理和增白效果影响因素的分析，提出面粉增白剂的合理用量及添加方法。

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