深海探索技术

说明载人潜水器（如Alvin、Deepsea Challenger）和遥控潜水器如何支持深海探索；描述利用声呐对海底进行声学测绘，并解释为什么目前只有约25%的海底完成了高分辨率测绘；探讨为什么深海比月球表面更难探索（高压、低温、黑暗、通信困难）；概述以太阳系海洋世界为目标的太空生物学任务。

Explain how crewed submersibles (Alvin, Deepsea Challenger) and remotely operated vehicles (ROVs) allow exploration of the deep; describe acoustic seafloor mapping using sonar and why only ~25% of the ocean floor has been mapped at high resolution; explore why the deep ocean is harder to explore than the surface of the Moon (pressure, cold, darkness, communication difficulties); survey astrobiology missions targeting ocean worlds in our solar system

评估问题 / Assessment

{{name}}能解释为什么月球表面被详细测绘的比例高于地球海底吗？是什么让深海探索比观测月球困难得多？

Can {{name}} explain why more of the Moon's surface has been mapped in detail than Earth's ocean floor — what makes deep ocean exploration so much harder than looking at the Moon?