For saving time, upgrading productivity and constant quality.

节省时间，提高生产力及稳定品质。

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Some allied study is done to the clothing manufacturing for constant quality.

同时，展开配套工艺研究，并应用于针布齿条的生产，产品质量稳定。

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Stone has a faithful constant quality has always been synonymous with his mind.

石具有坚贞不变的品质，历来是意志坚毅的代名词。

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Indeed the mixture of an ailing football club with little to spend on quality players, and constant outgoings to cover, may yet leave Delia Smith as sick as a parrot.

BBC: Delia: The Cook and the Canaries

There are references to favourite parables from the New Testament, and advice on keeping a tightly controlled diary as well as ensuring access to quality bathrooms (because constant jet travel plays havoc with the bowels).

ECONOMIST: Bagehot

We can and should control surface pollution as that effects air quality yet there is a huge difference between controlling air quality as that remains constant in cold or warm environments while temperatures constantly fluctuate from day to night, month to month and year to year, in the Western isles of Europe we are having a particularly cool and wet summer.

FORBES: Good News For Polar Bears Is Bad News for Global Warming Alarmists