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This machine could make working period shorter, decrease labor force and increase the quality of product.

实践证明、该机可缩短工期、降低劳动强度、提高产品质量。

youdao

The toughness may be well improved by postheat treatment which is large in energy consumption and long in working period.

焊后热处理可以较好地改善焊接接头的韧性，但存在耗能大、工时长等问题。

youdao

The results suggested that people do act differently if they think they are working with a group for a short period of time instead of a long period.

VOA: special.2009.03.03

"Once you submit your papers and passport, along with the visa fee - which is by the way non-refundable and ridiculously priced - there's normally a 15-working day period after which you are called back to pick up your passport and your visa which you may or may not get, " he said.

BBC: UK visa delays Pakistan rock star

Unlike Mr Zubkov, his career shows obvious signs of a period working for the security services.

ECONOMIST: Russia's government

Maybe one of you will have to (or want to) give up working for some period of time, say when you have an infant, or when a parent needs caretaking.

FORBES: Help! I'm the Breadwinner -- and He's Jealous