单词：self-rotation state
单词：self-rotation state 相关文章
California Governor Orders Mandatory Water Cuts 加州州长命令强制削减用水 WASHINGTON Environmentalists warn the world is facing serious water shortages and the United States is no exception. While parts of the country may get too much snow
VOA标准英语2015年(四月)
The rotation construction of two sections of a giant super-tonnage bridge on the Shantou-Kunshan highway in China's Guangdong Province has been completed on Friday morning. The two sections of the bridge also span across the Beijing-Guangzhou high-sp
2018CRI中国国际广播电台
Galactic Rotation 银河系自转 Astronomers calculate there is ten times more matter in our Milky Way galaxy than we can actually see. Discover how the orbital motions of stars in the galaxy reveal dark matter -- on today's Earth and Sky. JB: I'm Joel
(科普英语)Earth and Sky
Scientists around the world predict that climate change will have dramatic effects on agriculture in the coming decades. So, too, will pests and pesticides, the loss of species and the need to increase food production for a growing population. Resear
VOA标准英语2010年(十)月
加州州长下令节约用水 WASHINGTON Environmentalists warn the world is facing serious water shortages and the United States is no exception. While parts of the country may get too much snow and rain, that is not the case in the southwest. Cali
VOA标准英语2015年(八月)
加州州长下令节水 Environmentalists warn the world is facing serious water shortages and the United States is no exception. While parts of the country may get too much snow and rain, that is not the case in the southwest. California has been d
VOA双语新闻 2015年4月