The engineers are designing new spacecrafts for the Mars mission.

工程师们正在为火星任务设计新的航天器。

The museum has a fascinating exhibit on the history of spacecrafts.

博物馆有一个关于航天器历史的迷人展览。

The launch of the new spacecrafts was broadcasted live on television.

新航天器的发射在电视上进行了现场直播。

The spacecrafts are equipped with the latest technology for space exploration.

这些航天器配备了最新的太空探索技术。

Scientists are testing the durability of the spacecrafts in extreme conditions.

科学家们正在极端条件下测试航天器的耐久性。

How many spacecrafts are orbiting the moon?

有多少航天器绕月球轨道飞行?

The time windows between the relay satellite and the user spacecrafts can be computed based on their orbit parameters.

根据航天器的空间轨道参数，得到中继卫星与用户航天器之间的可见时间窗口。

Then the factors which effected spacecrafts long-time adjoint flying were listed and analyzed.

分析影响航天器长期伴随飞行的各种因素。

But both Viking spacecrafts send back photos of nothing but rocks and sand.

但维京航天器除了石头和沙子的照片外没有带回任何东西。

Development of spacecrafts include the work of mechanics and control theory specialists.

对航天器的发展包括力学和控制理论专家工作。