Transmission line icing is hazardous to power grid safety.

电线覆冰是影响电网安全运行的重要因素。

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According to grid safety and economy, multi-objective model of reactive power optimization was put forward, which contained active losses of system and voltage levels.

本文在综合考虑电网安全性和经济性的前提下，提出了电力系统多目标无功优化模型，模型中考虑了系统有功网损和电压水平。

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Getting enough to eat and enjoying the safety and comfort of living fully on the grid is certainly a good thing—but it does carry an environmental price.

人们获得足够的食物，充分享受生活在城市中的安全和舒适当然是一件好事——但这确实会带来环境代价。

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How do you get there? You go to go here, here and these could be busy roads, and so parents don't want to do it because of safety reasons, so you see how--when the country used to be laid out in a grid, like say New York City still is today, then people walk to get to places.

那要怎么才能去呢,你得绕道这里,还有那里的繁忙路段,出于安全原因家长们不允许孩子们这么做,可以看到,规划为网格状道路的地区,比如依旧保留了传统规划的纽约,人们出行是靠步行

耶鲁公开课 - 关于食物的心理学、生物学和政治学课程节选

Investment shifted to such aspects as improving system automation, digitalized grid construction, and reliability and safety.

FORBES: Cracking China's Power Sector

Power generation operates in a free market (subject to all the usual rules on safety etc) and the price which the grid can charge for carrying the power is regulated.

FORBES: Which Should We Have: Public Utilities Or Regulated Private Monopolies?

But in 2005, controversy blighted the race as a result of the Michelin tyre safety row which meant that only six cars were on the starting grid - those of Ferrari, Jordan and Minardi.

BBC: Formula 1 to make US return at new Austin track in 2012