Produce goods at lower unit cost.

生产较低单位成本的商品。

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The longer the production run of a product the lower the unit cost .

就某一产品来说，生产时间越长，单位成本就越低。

youdao

The longer the production run of a product the lower the unit cost .

就某一产品来说，生产时间越长，单位成本就越低。

youdao