求翻译：样品经过乙醇，丙酮和去离子水等常规清理后，虽然经过人眼的视觉观察已经十分清洁，但是在扫描电镜下依然存在着大量的颗粒污染物。是什么意思？

Samples after ethanol, acetone and deionized water and other conventional clean-up, visual observation of the human eye has been very clean, but the scanning electron microscope still exist a large number of particulate pollutants.

Sample after ethanol, acetone and deionized water, and general clean up, and after a while the human eye sight has 10 clean, but in the electric mirrors, there are still a lot of particulate pollution.

Sample after ethyl alcohol, after conventional cleaning ups and so on acetone and deionized water, although the process human eye visual observation already extremely was clean, but in scanned under the electron microscope still to have the massive pellet pollutant.

Sample after ethanol, acetone and deionized water, after the General clean up, despite the Visual observation of the human eye is very clean, but under the scanning electron microscope, there remain a large number of particles of pollutants.

正在翻译，请等待...