开云体育APP官方网站-康奈尔
If all goes as planned, a group of U.S. university students will have placed a satellite powered exclusively by water, into orbit around the moon in just over a year.如果一切都按计划展开得很成功,一群美国大学生就可以在一年内将一颗只用水作为动力的卫星送往月球轨道里。...