Nonmetallic materials are those materials such as woods, plastics, rubbers, epoxy resins, ceramics and diamonds that do not have a metallic base.
非金属材料是指如木头，塑料，橡胶，环氧树脂，陶瓷及金刚石等那些不含有金属基材的材料。
Nonmetallic materials are those materials such as woods, plastics, rubbers, epoxy resins, ceramics and diamonds that do not have a metallic base.
非金属材料是指如木头，塑料，橡胶，环氧树脂，陶瓷及金刚石等那些不含有金属基材的材料。
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