The substance polymerizes to form a hard plastic.

这种物质聚合形成坚硬的塑料。

《牛津词典》

Plastic material is extruded through very small holes to form fibres.

塑料从细孔中挤压出来形成纤维。

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As chemical precursors stream onto the surface of a rolling metal or plastic substrate, they react with one another to form a network of nanoparticles.

各化学母质流向滚动中的金属或塑料基片的表面，他们互相作用，形成一层纳米级微粒网状结构。

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They huddle together on blankets on the floor, their meagre belongings crammed tightly into plastic bags form a mini-fortress around their allotted space.

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These include the Excite Pure, Excite Pro and Excite Write, and while they share the same plastic design, 10-inch form factor, ports and Android 4.2 OS, they each offer something a little different on the inside.

ENGADGET

In physical form Steel will be a 6-inch plastic superhero action figure, with a well-developed backstory.

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