查询词典 Eratosthenes

People have suspected that the Earth might be round since as early as Eratosthenes in 240 B.C.– it was mostly just a bunch of dogmatic nut-jobs who continued to insist that the Earth was a birdbath you could fall off of if you sailed too close to the edge. So by the time Columbus rolled around in 1492, pretty much everybody knew they were dealing with a sphere, Chris included.

早在公元前240年，埃拉脱色尼（公元前三世界希腊数学家、天文学家和地理学家，Syna注）就猜测地球可能是圆的——在当时绝大多数人都固执地认为地球像一个盆子，如果你一直向前走接近地球的边缘就会掉下去，因此直到1492年哥伦布环游地球之前，大家才知道他们是在同一个球状的地球打交道。

The best of the early measurements of the earth's circumference was made by Eratosthenes.

早期测量地球周长的最准确结果是由埃拉托斯特尼得出的。

Eratosthenes' only tools were sticks, eyes, feet and brains, plus a taste for experiment.

Eratosthenes用到的工具仅只是棍子、眼睛、脚和脑袋，还加上实验。

Sticks, shadows, reflections in wells, the position of the Sun of what possible importance could such simple matters be But Eratosthenes was a scientist, and his musings on these commonplaces changed the world; in a way, they made the world.

棍棒，影子，井中的倒影，太阳的位置；这每日都在眼前出现的事物，有可能传递什麼重要的讯息呢但Eratosthenes是个科学家，他在平凡事务上的沉思改变了这个世界；或者可说，他的沉思造就了这个世界。

In the third century B.C. in Alexandria, the Greek scholar Eratosthenes relied on both geometry and reports of the sun's annual appearance almost directly over Aswan to calculate Earth's circumference, arriving at an estimate close to the actual distance.

在亚历山大公元前第三世纪，希腊学者 Eratosthenes 依据几何学和每年太阳出现在阿斯旺差不多正上方的记录来计算地球的周长，估计的数字接近实际距离。

It is greatly efficient, because this overcomes the shortcoming of Eratosthenes algorism that need compare every natural number in the given range, This algorism can acquire all prime numbers between 1 and any given natural number m This article also has given the complexity of the algorism, and even if sift in the algorism were different, it will be...

这避免了传统Eratosthenes 筛法需要比较每个数的缺点，极大地提高了算法效率。该算法能用于求1至任意自然数m之间的所有素数。同时还给出了该算法的最多比较次数公式，即使用不同的筛子利用该公式也容易求得其最大比较次数。

The discovery that the Earth is a little world was made, as so many important human discoveries were, in the ancient Near East, in a time some humans call the third century BC, in the greatest metropolis of the age, the Egyptian city of Alexandria. Here there lived a man named Eratosthenes.

就如同人类许多重要的发现，这个发现是在古代的近东地区，时间是西元前三世纪，在当时最伟大的城市，那个埃及城市：亚历山卓，住著一个名叫Eratosthenes的人，他成就这个地球圆周长度的贡献。

Eratosthenes asked himself how, at the same moment, a stick in Syene could cast no shadow and stick in Alexandria, far to the north, could cast a pronounced shadow.

Eratosthenes心中不禁疑问著：同样都是夏至的时刻，在Syene城，棍棒完全不显出阴影，而在Syene北方的Alexandria城，却投射出非常显著的影子。

The last sentence may be interpreted by the notice of Suidas, who informs us that Apollonius was a contemporary of Eratosthenes, Euphorion and Timarchus, in the time of Ptolemy Euergetes, and that he succeeded Eratosthenes in the headship of the Alexandrian Library.

最后一句，可能被解释由Suidas通知，谁告诉我们，阿波罗纽斯是一个埃拉托塞尼，欧福里翁和Timarchus当代的托勒密Euergetes时间，而且他成功地在亚历山大图书馆校长埃拉托塞尼。

Prime number ; distribution of prime ; divide exacdy ; sifting algorism of Eratosthenes ; algorism ; dynamic sifting algorism ; static sift algorism

素数；素数分布；整除； Eratosthenes筛法；算法；动态筛法；静态筛法

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新