sundial

On cloudy days or at night it was impossible to tell the time with a sun clock or a sundial .

在阴天或晚上,用太阳钟或日晷是无法分辨时间的。

The sundial is the oldest known device for the measurement of time .

日晷是已知的最古老的一种测算时间的装置。

For many years sundials have cast their spell over scientists and mathematicians

多年来，日晷一直吸引着科学家和数学家们。

The sundial surface is therefore parallel to the equatorial plane .

使晷面平行于天赤道面。

It 's like a huge sundial , ' I heard one reporter say .

“它就像一个巨型日晷。”一位记者如是说。

The stationary arm whose shadow indicates the time on the sundial .

能够用固定指针的影子在日晷上显示时间。

A sundial measures the movement of the sun across the sky each day .

日晷测量每天太阳跨过天空的运动。

Figure Design of General Sundial Surface

常用日晷晷面线图设计

By the sundial the solar term can be known too .

该日晷还能确定当时所处的节气。

Humans have used many devices to measure time . The sundial was one of the earliest and simplest .

人类使用了很多的装置去计量时间。日晷是其中最早和最简单的。

The hands are actually modeled after the shadow on a sundial .

时针实际上是以日昝上的阴影为模型的。

Sundials on houses and in gardens are a very popular decoration today .

如今把日规当作装饰品装在屋上和花园中是非常时髦的。

The upper end of the sundial points right to the North Pole ， and the lower end to the South .

这样，晷针的上端正好指向北天极，下端正好指向南天极。

English churchyards often have sundials in them & sometimes there is one on the church itself .

英国的教堂大院里通常设置日规，有时候教堂上也有一个。

Lay your long shadows on the sundials

将你修长的影子落在日晷之上

Or your favourite book beside the sundial .

或是在日落留下一本你最喜欢的书。

Moonlight was frosting the dew , and an old sundial threw a long shadow .

月光把露水照得雪白，一座旧日规投出一条长长的影子。

These circles were called " sundials " .

这些圆圈被叫做日晷。

The sundial works well only when the sun is shining . So , other ways were invented to measure the passing of time .

日晷只有在太阳光照射下能工作，所以其它的时间测量方法被创造出来。

As a time-measuring apparatus , the clepsydra is used more widely than the sundial .

作为计时器，漏刻的使用比日晷史为普遍。

They have these huge , magnificent sundials .

那有一些很大而且很宏伟的日晷。

16 . The development of mechanical timepieces spurred the search for more accurate sundials with which to regulate them .

16.机械计时器的发展促使人们寻求更精确的日晷，以便校准机械计时器。

The sundial could do little more than cast a shadow , when clouds or night did not render it a useless decoration .

日晷只能投影，要是天阴或夜幕低垂，就成了无用的装饰品。

Under it are a cluster of buildings such as Ziwei Hall , Sundial Shadow Hall and other auxiliary structures .

台上陈列着大型铜制的天文仪器，台下有以紫微殿。晷影堂为主的附属建筑群。

Lay your shadows over the sundial .

把你的影子投放在日规上。

Of course , a sundial did not work at night or on cloudy days , so men kept inventing other ways to keep track of time .

当然，日晷在夜间或阴天不能使用，所以人们还发明了其他方法来度量时间。

Military experts say the cloud and its dark shadow can be seen as a kind of sundial that suggests when an American plane took the photograph .

军事专家说，烟云及其阴影可以看作是一种日晷，显示了美国飞机拍摄这张照片的时间。

This article gathers the function of description of time and space using shadows , and points out the significance of sundial for opening out and using the order of nature .

本文把日晷表征时间与空间的功能汇总，还原日晷在揭示与利用自然规律方面的重要功能。

By adding sundials silica to digestion mineral slurry , the effects of high silica to settling property of red mud in bayer-combined process were studied .

通过向拜耳联合法溶出矿浆中添加硅酸钠，研究硅含量对赤泥沉降性能的影响。

The invention and use of the gnomon-and-ruler , sundial , clepsydra and other time-measuring machines is evidence of Chinese wisdom .

圭表、日晷、漏刻等计时仪器的发明和应用，证明中华民族是个充满智慧的民族。