| 单词 | production materials | 
| 释义 | production materials Holograms were also difficult to commercialize until the 1970s, when less expensive production materials allowed them to be embossed onto stickers, magazines, book jackets and a glittering array of tchotchkes.  The Times Literary Supplement  It also sells intermediate cement production materials, such as clinker.  Retrieved from Wikipedia CC BY-SA 3.0   Even before a product reaches store shelves, the raw materials and other stages of production materials that go into manufacturing any given product are moved by trucks.  Retrieved from Wikipedia CC BY-SA 3.0    | 
	
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