soft spacecraft landing

基本解释

All previous Russian spacecraft, including Soyuz, used parachutes as the main system for soft landing.
之前俄罗斯所有的宇宙飞船，包括联盟号宇宙飞船在内，都是使用降落伞（而非现在使用的固体推进剂发送机）作为软着陆的主要系统。
This thesis deeply researches the virtual reality techniques used in the spacecraft's soft landing process on asteroids.
本文对深空探测器在小行星表面软着陆过程中一些虚拟现实技术进行较为深入的研究。
The guidance method can meet the need of pinpoint soft landing, but its requirement for attitude change goes beyond the attitude maneuver capability of landing spacecraft.
该制导方法虽能满足精确软着陆的需要，但对姿态变化的要求超出了着陆器姿态机动能力。