不发光的

Some celestial bodies similar to galactic nebula s but without any luminosity sometimes reveal their presence as dark patches obscuring the light of stars beyond them.

某些与银河星云相似但不发光的天体，有时看来象块黑色补丁，遮住了周围的星光。

"Dark matter : Nonluminous matter not directly detectable by astronomers, hypothesized to exist because the mass of the visible matter in the universe cannot account for observed gravitational effects."

暗物质：不发光的物质，天文学家无法直接发现，由于宇宙可见物质的质量无法解释观测到的重力效应而假设其存在。

"Dark matter : Nonluminous matter not directly detectable by astronomer s, hypothesized to exist because the mass of the visible matter in the universe cannot account for observed gravitational effects."

暗物质：不发光的物质，天文学家无法直接发现，由于宇宙可见物质的质量无法解释观测到的重力效应而假设其存在。

"Dark matter : Nonluminous matter not directly detectable by astronomers, hypothesized to exist because the mass of the visible matter in the universe cannot account for observe d gravitational effects."

暗物质：不发光的物质，天文学家无法直接发现，由于宇宙可见物质的质量无法解释观测到的重力效应而假设其存在。

Planet n.A nonluminous celestial body larger than an asteroid or a comet, illuminated by light from a star, such as the sun, around which it revolves. In the solar system there are nine known planets: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune, and Pluto.

行星：比一颗小行星或一颗彗星大的不发光的天体，由它绕转的恒星，如太阳的光所照亮在太阳系中有九个已知的行星：水星、金星、地球、火星、木星、土星、天王星、海王星和冥王星英语词汇网 www.wbw.com.cn

A nonluminous celestial body larger than an asteroid or a comet,illuminated by light from a star,such as the sun,around which it revolves.

行星比一颗小行星或一颗彗星大的不发光的天体，由它绕转的恒星，如太阳的光所照亮在太阳系中有九个已知的行星：水星、金星、地球、火星、木星、土星、天王星、海王星和冥王星

He tells us of lightless stars,"visible" only to radio antennae.

他对我们谈起一些不发光的星星，只有无线电天线才可以&看见&。

Lightless stars 'visible' only to radio antennae .

不发光的星星仅仅'可见'于无线电触角。

Some celestial bodies similar to galactic nebulas but without any luminosity sometimes reveal their presence as dark patches obscuring the light of stars beyond them.

某些与银河星云相似但不发光的天体，有时看来象块黑色补丁，遮住了周围的星光。

For example, layer a shimmery orange shadow over a matte brown one or smudge out a grey liner with a bright blue cream eyeshadow.

例如，在不发光的褐色上覆盖以微亮的橙色眼影，或者涂抹一层灰色色调加以亮蓝色眼影霜。

The absorption and distribution of chromium were studied in ryeusing nutrient culture technique and pot experiment.

采用不同浓度K2CrO4(0，0.4，0.8和1.2 mmol/L)的Hoagland营养液处理黑麦幼苗，测定铬在黑麦体内的亚细胞分布、铬化学形态及不同部位的积累。

By analyzing theory foundation of mathematical morphology in the digital image processing, researching morphology arithmetic of the binary Image, discussing two basic forms for the least structure element: dilation and erosion.

通过分析数学形态学在图像中的理论基础，研究二值图像的形态分析算法，探讨最小结构元素的两种基本形态：膨胀和腐蚀；分析了数学形态学复杂算法的基本原理，把数学形态学的部分并行处理理念引入到家实际应用中。