So, this dissertation defines it using the characteristics of large science popularization activity, so as to set base for the following study.

因此，本文从大型科普活动的特点出发界定了这个重要的概念，为后文的研究奠定重要的基础。

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Also, the system composing of phased array ultrasonic imaging and its key technique are given, which set base for underwater ultrasonic imaging in theory.

还提出了相控阵超声成像的系统构成以及其中应用的关键技术指标，为水下超声成像的研究奠定了理论基础。

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The mattress and base are normally bought as a set.

床垫和床基通常成套购买。

《柯林斯英汉双解大词典》

A set of threads called the warp form the base of the cloth.

VOA: special.2009.11.04

It's one of the most rapidly changing, hard to keep up with areas because someone can set up an electronic exchange overnight and suddenly become a base for trading trillions of dollars of securities.

经纪业是一个变化最快的行业之一,人们很难跟上它的步伐,因为人们可以在头一天晚上,设置一个电子交易,一夜之间,他就能在证券市场赚到千亿美金

耶鲁公开课 - 金融市场课程节选

They set up base camp, often in absurdly frigid temperatures, and step carefully into waist-high snow.

WSJ: Snowboarder Jeremy Jones's Secret Code of Snow | Creating

Passionate about Africa and technology, Jamme has found it necessary to set up base outside her continent, making England her new home today.

CNN: Marieme Jamme: Shaping Africa's tech revolution

Kanner and his company will now be able to tap into an established loyalty platform that allows a set user base to access ScoreBig from an earn and redemption perspective, giving MileagePlus a new distribution channel, but also opening ScoreBig to consumers at large.

FORBES: United MileagePlus Partnership Opens Vast Membership To Sporting And Entertainment Events