The early works of direct methods utilized the quasi-linearity of transient energy margin (TEM) to approximate the transient stability limits, which opened an era of this area.

早期直接法将线性度较好的暂态能量裕度用于求取暂态稳定极限，从而开辟了对这一领域的研究。

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The results indicate that this kind of energy dissipation function can improve the water flow regime in the stepped spillways and reduce the flow velocity by a wide margin.

结果表明：此种消能工能改善台阶式溢洪道的水流流态，大幅度地减小水流流速。

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And the rising price of energy sources and the fierce competition in the market make ceramics an industry with a narrow margin of profit and an industry which bring negative profit.

尤其是近年来，国内能源价格上涨和市场竞争的激烈使得陶瓷产业进入“微利时代”，一些陶瓷外贸企业甚至处于亏损边缘。

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"A 5% margin on the business is the sort of margin we require" to make investments in new sources of energy, he added.

BBC: British Gas profits boosted by colder weather

Aubrey McClendon was forced to sell a gigantic stake in his company Chesapeake Energy because of margin calls.

FORBES: Magazine Article

But inflation should then drop back, as the contribution from retail energy prices wanes and the margin of spare capacity in the economy increases.

BBC: Central banks' official statements