Have you ever gotten a piece of sand or dirt or other small particle in your eye?

你曾经有过沙子、灰尘或其他小颗粒进入眼睛的经历吗？

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Small particle size; good mechanical stability.

粒径小；机械稳定性好。

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MgO powders, with small particle size, loose structure and high strain energy, have high activity.

晶粒细小，结构疏松，应变能大的氧化镁粉末具有较高的活性。

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If the atom in question is in a small particle on the surface of a piece of silicon, the result is what is known as a surface plasmon.

ECONOMIST: Solar energy

Nanophase can make them 50 nanometers wide, which renders the zinc oxide transparent no more white goop since each crystalline particle is small enough to allow harmless light to pass through.

FORBES: The Science of Small

Nanophase can make them as small as 50 nanometers wide, which renders the zinc oxide transparent no more white goop since each crystalline particle is small enough to allow harmless light to pass through.

FORBES: The science of small