The surface tension, arc blow force and electromagnetic force work positive to improve the penetration, and the buoyancy can increase the width in the middle of weld pool.

表面张力、电弧吹力和电磁搅拌力均有利于获得较大的熔深，浮力有利于增加焊缝中间部位的宽度。

youdao

The young people here are hard at play, and the Muslim elders are hard at work trying to keep them engaged in positive activities.

VOA: standard.2009.12.20

No, we call that work positive work. All right, so that means we need to put a negative sign right here, by convention.

历史上有过不同的习惯，这里我们规定,如果环境对系统做功。

麻省理工公开课 - 热力学与动力学课程节选

And we work on the positive on what comes of this side of the graph that you saw up there.

我们研究积极性，它处于这一边,大家可以在这上面看到。

哈佛公开课 - 幸福课课程节选

What I was talking about -- what has been provided by the work, the positive work that the Speaker of the House and the President did, is a lot of detail about how you could get to significant tax reform and entitlement reform, and the savings that you can glean from that, the deficit reduction you can glean from that.

WHITEHOUSE: Press Briefing

The bank cites a slowdown in the price component of the PMI, which leads core inflation by four months, and signs that government policy to cool the economy is starting to work as positive signals.

FORBES: A Double-Dip Recession? Bah Humbug

Her company recently teamed up with the Great Place to Work Institute to ask senior executives from top-ranked companies about the value of a positive work environment.

FORBES: How About if Culture and Strategy Eat Lunch Together?