These results are independent of the surface material, and are valid for both sinusoidal and ran- dom rough surfaces.

这些结果与表面材料无关，并且对正弦和随机粗糙表面都是有效的。

youdao

Making up around 5.6 per cent of the surface material, it was present in sufficient quantities to be useful to future manned missions.

在月球表面，水约占总物质含量的5.6%，这些储存量足够保障人类未来在月进行的各种探索任务。

youdao

At the moment the camera can produce only low-quality images, and cannot cope with objects that have several sorts of surface material.

现在，这个照相机还只能照出低质量的图像，也不能处理表面由若干不同材料组成的物体。

youdao

Scientists said the glass came from material created as deep as three hundred kilometers below the moon's surface.

VOA: special.2009.07.29

Scientists cannot tell yet how easy it will be to scoop up the surface material, she said.

CNN: Mars landing went 'flawlessly,' scientists say

Observations of the material coating the dark face of Iapetus indicate it has a similar composition to the surface material on Phoebe.

BBC: New ring detected around Saturn

And in the chamber, the respiration and the metabolic properties of the surface sand material were measured and we added nutrients and measured the gases that were produced.

NPR: Revisiting the Viking Missions to Mars