The diffraction of Gaussian beams at an square aperture is studied based on the Kirchhoff and Fresnel diffraction integrals.
使用基尔霍夫衍射积分公式和菲涅耳衍射积分公式对高斯光束通过方孔光阑的衍射进行了研究。
The Sandia prototype's solar collector has an area of about 20 square meters (215 square feet) for a reactor the size of a beer keg.
桑迪亚原型的太阳能采集器有一个约20平方米（215平方英尺）的面积，用于一个啤酒桶大小的反应堆。
Andorra, with an area of some 200 square miles, is considerably larger than Monaco.
安道尔的国土面积约200平方英里，比摩纳哥大得多。
The reserve covers an area of some 1 140 square kilometres.
保护区占地面积大约1 140平方公里。
It covers an area of 20,876 square kilometers and has a population of about 8.
它占地面积20876平方公里，人口约8人。
Apple Park is like a huge landed UFO, which covers an area of 708,000 square metres.
苹果公园就像一个着陆的巨大飞碟，占地面积为708000平方米。
Covering an area of 108 square kilometers, Langshan Mountain has rich natural scenery and lots of tourism resources.
朗山占地108平方公里，自然风光多彩，旅游资源丰富。
On May 1st, 2016, in Alberta, Canada, a wildfire destroyed an area of nearly 700 square miles.
2016年5月1日，在加拿大阿尔伯塔省，一场野火烧毁了近700平方英里的区域。
Not having an oven, I made some square pots with lids and covered them with hot ashes.
没有烤箱，我做了一些有盖的方形罐子，在上面撒上热灰。
They reflect a concentrated beam of light onto the town's central square, creating an area of sunlight roughly 600 square meters.
它们将一束集中的光线反射到城镇的中心广场上，形成面积大约为600平方米的阳光区域。
Ge Garden with an area of 12,000 square meters houses over 60 types of bamboo.
个园占地12000平方米，种有60多种竹子。
It covers an area of about 1.8 million square kilometers, about one fifth of the national total.
它的面积约180万平方公里，约占全国总面积的五分之一。
Together, they can give light to an area of up to 6,400 square kilometers on the Earth for 24 hours.
它们合在一起可以给地球上高达6，400平方公里的区域提供24小时的照明。
For example, No.38 Middle School in Hefei, set up a 500 square meter farm on an open platform (露天平台) of their teaching building.
例如，合肥的第三十八中学在教学楼的开放露天平台设立了一个500平米的农场。
At a cost of nearly 7 million euros (51 million yuan), the panda house covers 9,000 square meters and looks like an ancient Chinese palace.
熊猫馆耗资近700万欧元（5100万人民币），占地9000平方米，看起来像一座中国古代宫殿。
I'll give you one pound an hour, if you will carry a brick under your arm and walk around the square for five hours without stopping.
如果你能在胳膊下夹着一块砖头，在广场上不停地走五个小时，我给你每小时一英镑。
Leicester Square is still the perfect place to catch an afternoon matinee followed by a cappucino.
莱斯特广场仍然是追赶下午音乐会后来一杯卡布奇诺的理想场所。
The unfurling of Ikaros, which has an area of 200 square metres, is therefore no mean feat.
展开伊卡洛斯，这个200平方米的装置，因此是一个艰难的壮举。
In the distance to the east, our cliff top fanned out into an arid square mile of Indian grass, prickly pear, and more sage.
东边很远的地方，我们悬崖的顶部是一平方英里干旱的土地，上面满是印第安草，仙人掌以及香草。
But his entire annual pay would be enough to buy only about two square meters of an apartment, or 21.5 square feet.
但是他一年的薪水也只足够买一间公寓房的2平方米，即大约21.5平方英尺。
In another, they estimated the line's length relative to the size of a square - an easier task for the Asians.
另一项是对着正方形的面积来估算一条线的长度——对亚洲人说更容易一些。
Angkor was the world's largest pre-industrial city, growing to an area of about 390 square miles.
吴哥曾经是世界上最大的非工业化城市，占地增长到约390平方英里。
It covers an area of 1, 810 square kilometres.
小岛面积约1,810平方公里。
An array of objects is contained within square brackets .
对象数组包含在方括号中。
It covers an area of 340 square miles near Killeen, some 50 miles from Waco, Texas.
胡德堡基地位于基林附近，占地340方哩，据德克萨斯州韦科50英里。
When an eruption in 1977 drained the crater of its lava lake, Nyiragongo flooded 20 square kilometers in an hour and killed around 70 people.
1977年的那次火山爆发，火山口的熔岩湖喷涌而出，在1小时之内就淹没了周围20平方公里的土地令大约70人丧生。
The most recent annual estimate of the number of homeless people sleeping on the streets of New York showed an increase, but Times Square has been an exception.
根据近年来的估计，纽约露宿街头无家可归者的人数有上升的趋势，但时代广场是一个例外。
The most recent annual estimate of the number of homeless people sleeping on the streets of New York showed an increase, but Times Square has been an exception.
根据近年来的估计，纽约露宿街头无家可归者的人数有上升的趋势，但时代广场是一个例外。
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