The explicit formula for the line-integrated emissivity with taking into account boundary effect is presented.

Determination of flame emissivity is important for flame temperature measurement by optical method.

燃烧火焰辐射率对于光学法测量火焰温度具有重要意义.

The use of metallised fabrics is sometimes proposed to reduce the emissivity of a fabric.

不时地有人建议采用镀有金属膜的织物以减少织物的发射率.

Extensive numerical calculations of the emissivity have been performed over a broad range of parameters.

在很宽的参数变化范围内对辐射率作了数值计算.

A small percentage of galaxies called active galaxies emit tremendous amounts of energy.

有一小部分被称做活动星系的星系放射出巨大的能量。

The U.S. and China consume more energy and emit more greenhouse gases than any other countries.

美国和中国比任何其他国家消费的能源和释放的温室气体都要多.

They emit gases, make noise and keep crashing into each other.

它们排放气体, 发出噪音,而且不断地相互碰撞.

Infected wounds and tissues emit distinctive odors that can be detected by an electronic nose.

被感染的伤口和组织会发出能被电子鼻探测到的特有气味.

The atoms are excited and emit their characteristic colors.

原子被激活后,则发出不同的颜色.

Newer digital phones emit less radiation than older analog models of the sort studied.

而新型数字机的辐射则要比老式模拟机少得多.

To emit ( an utterance or a sound ) loudly and harshly.

大声而刺耳地发出 ( 叫唤或声音 )

Fireflies emit light but not heat.

萤火虫发光但不放出热.

They say that jungles and rain forests emit greenhouse gases which create global warming.

他们认为从林地带和雨林排放温室气体导致全球变暖.

The null must intersect the emitter at the point where you want to emit particles.

这个空物体必须和发射器有交叉的点以便于从这些部位发射粒子.

Industries that emit carbon dioxide would have to buy permits to do so.

排放二氧化碳的行业需要购买排放许可.

Some active galaxies emit jets and blobs of highly energetic, electrically charged particles.

一些活动星系发出高能的喷射和溅射——带电的粒子.

Of even more significance, fuel cells emit only water and heat as byproducts.

更大的不同点是, 燃料电池排放的副产品只有水和热.

Luminescent organisms emit heatless light.

发冷光的有机体能够发出没有热量的光.

It can also emit electrons so they can be used in ultrathin display screens.

它也能发射电子,因而能用于极薄的显示屏.

Emit two vertical line and one horizontal line, plumb below point.

可产生二条垂直线和一条水平线, 带下对点.

They can also emit electrons, so they can be used in ultrathin display screens.

它们也能发射电子, 因而能用于极薄的显示屏.