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| a layer of non-stick material | |||
| non-metallic coating; nonmetallic coating (【技】以非金属材料为组分的钢铁覆盖层，分有机涂层和无机涂层两大类，均属隔离性涂层，可把钢铁基体与腐蚀介质隔离开，防止钢铁基体受到腐蚀。) | |||
| 非金属涂层: 1 phrase in 1 subject |
| Technology | 1 |
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