物资代用
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piping materials substitution 管道材料代用
substitution materials 替代材料
bone substitution materials 骨替代材料
Substitution Of Materials 物质替换
Prof Elliot from QUB said the substitution of "low quality, low value materials for the true foodstuff has plagued food production for centuries".
BBC: Burgers
However, the evidence to date suggests strongly that we may be soon seeing a big substitution of combined intelligence, technology, and behavioral changes in place of raw materials.
FORBES: On The Verge of Change: A View of Our Future Energy World
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