Let us assume that a part spent 50 hours from the time it arrived at a plant as a rough casting or bar stock to the time it was a finished product.
英
美
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讓我們假設,一個(gè)部分花費50個(gè)小時(shí)的時(shí)間到達工廠(chǎng)作為一個(gè)粗略的鑄造或酒吧的股票時(shí),這是一個(gè)成品。
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