raw material sources的用法和樣例：
例句
- Chemical fibre can be divided into regeneration fibres, and synthesizing fibres according to different material resources.
化學纖維可根據原料來源的不同，分為再生纖維和合成纖維等。 - Because of the outstanding quality, high efficient, low cost, and the wide raw material sources, plasma jet surface metallurgy will has a potential in market competition.
由於等離子束表面冶金技術具有突出的優質高效低成本綜合優勢，且塗層原料來源廣，在市場競爭中具有潛力。
