Substances such as wood, plastics, and paper conduct heat slowly. They are therefore poor conductors, or good insulators.
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or good insulators
或者好的绝缘体
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Most metal oxides widely used are semiconductors or insulators, and have good absorbing properties to laser.
常用金属氧化物大多为半导体或绝缘体，对激光有良好的吸收性能。
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