原材料
原料(raw material)一般指来自矿业和农业、林业、牧业、渔业的产品;材料(processed material)一般指经过一些加工的原料。举例来讲,林业生产的原木属于原料,将原木加工为木板,就变成了材料。但实际生活和生产中对原料和材料的划分不一定清晰,所以一般用原材料一词来统称。免費玩原材...
原料(raw material)一般指来自矿业和农业、林业、牧业、渔业的产品;材料(processed material)一般指经过一些加工的原料。举例来讲,林业生产的原木属于原料,将原木加工为木板,就变成了材料。但实际生活和生产中对原料和材料的划分不一定清晰,所以一般用原材料一词来统称。免費玩原材...
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