The space uniformity of spontaneous emitation from the surface of sample is like that of the incident light.

从样品表面出来的自发发射的空间均匀性似乎与入射光一样。

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Hardness, tensile strength, breaking elongation ratio and aging property of samples were tested and surface of sample after aging was represented by SEM.

对试样进行了硬度、拉伸强度、断裂伸长率、热老化等性能试验；对老化后的试样表面进行了SEM表征。

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Along the experiment time was prolonged, the corrosion products was appeared on the surface of sample. Then the runoff effect became more aggravated, so the dynamic corrosion rate was elevated.

随着试验周期的延长，表面产生了腐蚀产物，这时冲刷作用对试样表面腐蚀产物膜的破坏更加严重，所以冲刷腐蚀速率比浸泡腐蚀速率增加。

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Curiosity drilled a hole in Mars to collect a sample of its surface, which is the first time any rover has drilled such a hole on the Red Planet.

FORBES: Curiosity Drills A Hole On Mars

Earlier this month, the Mars Curiosity rover drilled into the Martian surface, in the hopes of collecting a sample from the interior of a rock.

FORBES: Curiosity Confirms Rock Sample Found From Beneath Mars

Drilling a few centimetres inside a rock provides a fresh sample that is free from the alteration that can occur at the surface as a result of weathering or radiation damage.

BBC: Curiosity Mars rover hammers into rock