背场背反射太阳电池

太阳科普第3期

The winter solstice events at Maeshowe demonstrate 梅萧韦古墓葬的冬至事件 an intimate and precise knowledge of 展现了古人 the sun's movements through the sky. 对太阳运行轨迹的精确了解 It was the first step on ourjourney to

发表于:2018-12-07 / 阅读(42) / 评论(0)

2006年慢速英语（五）月

太阳科普第13期

When the sunspots disappeared something on the sun changed 太阳黑子消失时，太阳表面的变化导致 that cooled the Earth down. 地球温度降低 But it wasn't that the solar output changed. 改变的并不是太阳的输出量 No matter

发表于:2018-12-07 / 阅读(60) / 评论(0)

太阳科普

Drying Food

Broadcast: Jan 21, 2003 By Gary Garriott Drying food is a simple, low-cost way to keep food safe for eating. Drying removes water that small organisms use to break down food into other substances. Som

发表于:2019-01-02 / 阅读(67) / 评论(0)

VOA2003（上）-社会广角

“朱诺”飞船靠近木星

Spacecraft Moving in for Jupiter Close-up 朱诺飞船靠近木星 Jupiter, our solar systems largest planet, is about to show its secrets. On July 4, a NASA spacecraft will enter Jupiters orbit and start sending data back to Earth. It will be the fi

发表于:2019-01-12 / 阅读(121) / 评论(0)

2016年VOA慢速英语(七)月

AGRICULTURE REPORT - Solar Food Dryers

AGRICULTURE REPORT - Solar Food Dryers By Gary Garriott Broadcast: Tuesday, March 01, 2005 I'm Gwen Outen with the VOA Special English Agriculture Report. Drying food is a simple, low-cost way to keep

发表于:2019-01-30 / 阅读(55) / 评论(0)

农业与发展

MESSENGER Probe Sends First Mercury Images

The U.S. space agency(代理中介) has released the first ever image taken of the surface of Mercury from a spacecraft orbiting the planet. The black and white image, posted on the NASA website Tuesday, shows a surface pocked with craters of varying

发表于:2019-01-31 / 阅读(64) / 评论(0)

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