玻璃，不锈钢和一些塑料就属于食品级材料。

Glass, stainless steel and some plastics are food grade.

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吸水的海绵块放置在不锈钢或塑料托盘内。

The Sponges are put in the stainless steel/plastic tray.

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这管子是碳素钢(不锈钢、铸铁、塑料)制成的。

This pipe is made of carbon steel (stainless steel, cast iron, plastic).

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铁芯外壳可为不锈钢、金属铝、塑料等材质。

Core cover is made out of stainless steel, metallic aluminum, plastic material etc...

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铁芯外壳可为不锈钢、金属铝、塑料等材质。

Core cover is made out of stainless steel, metallic aluminum, plastic material etc...

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