查询词典 astronomical unit

The official SI unit of astronomical distance; the name is a contraction of "parallax-second".

秒差距是天文学上作为距离的官方认定的标准国际单位；名字是&parallax-second&的缩写。

A linear unit used for astronomical distances .

用来表示天文学距离的长度单位。

Using this new unit makes astronomical distances easier to express: the nearest star is 4.3 light-years away.

一光年等于9，458，000，000，000 光年，使用新的单位使得距离的测量更容易表示：最近恒星为4.3光年。

A linear unit used for astronomical distances.

长度单位，用来表示厚度。

A unit of astronomical length based on the distance from Earth at which stellar parallax is one second of arc and equal to 3.258 light-years, 3.08'×03 kilometers, or .98 × 0 3 miles.

秒差距：天文学自地球起的距离单位，星视差为角秒，等于3.258光年，3.08'×03公里，或。98×0 3英里

Light-year is an astronomical unit.

光年是一个天文单位。

The variations indicate that V391 Pegasi b orbits at about 160 million miles, or 1.7 times Earth's distance from the sun, called an astronomical unit.

这些变化说明，行星& V391派格西 b &在大约1.6亿英里处围绕着其恒星旋转，这个距离相当于地球跟太阳距离的1.7倍，即1.7天文单位。

But more surprising miracle is,however, not the majestic pyramids of Khufu posture, but the number of "coincidences": people now know,the distance from the Earth to the sunis 146.24 million km, and the average distance between the Sun is 146590000 km, being a unit of astronomical measurement; If the current height of the pyramid of Khufu 146.59 meters get multiplied by the billions, the result is exactly 146,590,000 kilometers!

但更为令人吃惊的奇迹，并不是胡夫金字塔的庞大，而是发生在胡夫金字塔上的数字&巧合&：人们到现在已经知道，从地球到太阳的距离，也就在14624万公里到15136万公里之间，而人们将地球与太阳之间的平均距离14659万公里作为一个天文度量单位；如果把胡夫金字塔的高度146.59米乘以十亿，其结果正好是14659万。

A unit of astronomical length based on the distance from Earth at which stellar parallax is 1 second of arc; equivalent to 3.262 light years.

测量恒星距离的天文学长度单位；一秒差距等于三十万亿公里。

Astronomical unit A.U.

天文单位

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。