production life cycle

基本解釋

Production life cycle (versioning)
生產(chǎn)生命周期（版本控制）
The sameness:both of them consider the production life cycle cost in design.
兩者的相同之處主要體現(xiàn)在從設(shè)計(jì)入手考慮產(chǎn)品的全生命周期成本。
Less clear, largely because no one has bothered to look, are the emissions over its entire production life cycle — that is, from the moment a well is plumbed to the point at which the gas is used.
而因?yàn)闆]有人在意去查究，天然氣整個(gè)生產(chǎn)周期（也就是說，從天然氣井中直到使用它的地點(diǎn)）中的排放量卻不太明確。

The latter item is especially costly, since most of the life-cycle costs of jet engines are incurred after production, as parts are repeatedly repaired and replaced to keep the engines in a state of high readiness.
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