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本影

na.【物】umbra
网络umbral; Antumbra; the umbra

本影

英-汉英-英网络释义

本影

na.

1.【物】umbra

1

Explanation : The dark, inner shadow of planet Earth is called the umbra .

说明：上图黑色的阴影被称为地球本影。

2

Due to the Sun's low altitude , the shadow is a highly elongated ellipse with a major axis of ~1000 km , nearly 5 times its minor axis .

由于太阳的高度低，本影被拉长呈椭圆形主轴大约 1000 公里，几乎 5 倍于短轴。

3

Total Eclipse - When the entire moon enters the Earth's umbra (the darkest part of its shadow ), this is called a total eclipse.

月全食 ——整个月球全部进入地球的本影中（即地球影子中最暗的部分）。

4

Shaped like a cone extending into space , the umbra has a circular cross section that can be most easily seen during a lunar eclipse .

本影就像一个圆锥一样延伸在空间中，当月食发生时，它很容易被看到。

5

When this happens , the umbra cannot reach Earth and an antumbra shadow is created over the planet's surface .

当这种情况发生的时候，本影无法到达地球，非本影阴影就会出现在地球表面。

6

The parts in communion are hidden in the umbra of her generous behind .

在共融的部分隐藏在本影她的慷慨支持。

7

During an average total lunar eclipse, the moon is within the Earth's umbra for about an hour . This is called totality.

月全食发生时，月亮在地球的本影中大约要持续 1个小时，这就是所谓的 “全食 ”。

9

Notice the lack of self occlusion or definition on the silhouette of the object .

注意物体表面没有自遮挡或者本影区域。

10

This will only be experienced at a specific point on Earth where a shadow cast by the Moon , called an umbra, reaches our planet .

日全食只会出现在地球上特定的地方，这些地方都被月球的阴影遮盖，这种阴影被称作本影。

11

Partial Eclipse - When only part of the moon enters the Earth 's umbra, this is called a partial eclipse .

月偏食 ——月球仅有一部分进入地球的本影中。

13

The southern edge of the moon will pass over the northern edge of the earth 's shadow, creating a partial lunar eclipse .

月亮的南缘将从地球本影北方边缘掠过，形成月偏蚀景象。

15

Moon enters umbra : Instant of first external tangency of Moon with the umbra .

初亏：月球由东缘慢慢进入地影，月球与地球本影第一次外切。

18

Penumbral lunar Benying and did not sweep the place , simply can not see the solar eclipse .

月球本影和半影没有扫过的地方，根本看不见日食。

19

sometimes the moon only enters the penumbra without touching the umbra . this is a penumbral lunar eclipse .

有时月球并不会进入本影而只进入半影，这就称为半影月食。

20

therefore , if the moon is in the umbra , there will be total lunar eclipse

所以，当月球完全进入了地球的本影，便会发生

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