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machine-hour

機械時間
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Wiktionary英語版

出典：Wiktionary

machine-hour

出典:『Wiktionary』 (2025/03/21 14:43 UTC 版)

語源

Compound of machine +‎ hour, although, as with any such unit of measure (e.g., ton-miles, newton metres), the mathematical relationship of multiplication is simultaneously involved: X machines working during Y hours = X × Y = Z machine-hours.

名詞

machine-hour (plural machine-hours)

  1. The amount of work that can be done by one machine in one hour; a billable hour for one machine. (Said of, for example, a piece of heavy equipment or a machine tool.)
    Coordinate terms: person-hour, man-hour
    With the right carbide tooling and toolpath programming, you're not looking at too many machine-hours for a job like this. If you're going to putz around with cheaper tooling and guesstimated feedrates, then you'll pay for those in more machine-hours.

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