The metal particles, which were five nanometres (billionths of a metre) across, were themselves coated with a photosensitive compound called azobenzene.

而其中直径为5毫微米(毫微米：一米的十亿分之一)的金属颗粒表面会自动包裹上一层偶氮苯光感涂层。

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Porcelain enamel belongs to the inorganic nonmetallic material, it is one kind of compound materials, which was coated on the metal surface and burned under high temperature.

搪瓷材料属于无机非金属材料，它是一种深覆在金属表面的一层或多层玻璃质釉，在高温下烧制而成的金属与无机氧化物牢固结合的复合材料。

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The compound coating of metal and ceramics is prepared on the surface of carbon steel by combustion synthesis technology.

利用燃烧合成技术，在碳钢表面上制备了金属陶瓷复合涂层。

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As a small concession to the other side, the Palestinians have erected a sort of prefabricated metal hut just inside the compound, where two white monks are allowed to stay subject to strict limits on the size of the wooden awning they may build to fend off the heat.

ECONOMIST: The battle of the churches

It was little more than a razor wire and mesh compound of cages, protected from the elements by a metal roof.

CENTERFORSECURITYPOLICY: Guantanamo Bay: five years later

In the middle of the compound, there is a giant cage with huge metal grilles.

BBC: Mentally ill patients in Indonesia held in chains