Nonreusable rockets launched from the ground based on designs from the 1940s are not the answer.

20世纪40年代地面发射的那种一次性火箭不是我们要的答案。

youdao

In addition to the X-rays observed with Chandra, other data critical for this result came from NASA's Spitzer Space Telescope and the ground-based, infrared Two Micron All Sky Survey.

除了钱德拉望远镜观测到的X射线辐射之外，这项结果所需的其他关键数据来自NASA的斯必泽太空望远镜以及地面的2微米红外全天巡天。

youdao

The Problem of astrometric photometry is discussed in this paper. The photometric capabilities on both the ground-based astrometric instruments and space telescopes are presented.

讨论有关天体测量中的测光问题，介绍一些地面天体测量仪器和空间天体测量望远镜的测光研究。

youdao

After all,they observe the skies with huge ground-based and costly space telescopes.

VOA: special.2009.08.25

U.S.Defense officials say the new plan would include interceptor missiles deployed on U.S.Navy ships in the North Sea and Mediterranean, in addition to ground-based weapons.

VOA: standard.2009.10.21

He says this is one reason he recommended scrapping plans to build a sophisticated radar system in the Czech Republic and installing ground-based interceptors in Poland.

VOA: standard.2009.09.17

The actual number of troops, the timing, has to be determined by commanders on the ground based upon the conditions on the ground.

NPR: Debate on Iraq Timetable Moves to Senate

Such systems include all phases of the Phased Adaptive Approach to missile defenses in Europe, the modernization of the Ground-based Midcourse Defense system, and the continued development of the two-stage Ground-Based Interceptor as a technological and strategic hedge.

CENTERFORSECURITYPOLICY: Center for Security Policy | Mapping a National Security Failure: Ratification of the New START Treaty | Page: 14

Just one year ago, the Bush administration announced it would keep the ground-based LORAN system operational to serve as a backup for the satellite-based global positioning systems, which are becoming ubiquitous in cars, planes and ships.

CNN: Navigation system, aid to farmers among budget cuts