To help answer these questions, the probe carries a Surface Science Package (SSP), which will emit sound waves in the final stage of the descent to gauge the roughness of the surface.

To help answer these questions, the probe carries a Surface Science Package (SSP), which will emit sound waves in the final stage of the descent to gauge the roughness of the surface.

为回答这些问题，探测器载有一套表面科学仪器组（SSP），将在降落的最终阶段发出声波，以测定表面的粗糙度。