The theoretical dynamic simulation models for stationary flow and transient flow under the isothermal and non-isothermal condition are set up based on the three conservation equations.

以流体力学三大守恒方程为基础，建立了等温和非等温条件下的燃气管网稳态和动态仿真理论模型。

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WWF director of conservation Dr Gilly Llewellyn, who conducted a three day expedition through the polluted waters, said if the spill were closer to shore there would be global outrage.

世界自然基金会保护司司长吉利·卢埃林对污染水域进行了三天的考察后说，如果漏油接近海岸，将引起全球性危害。

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The survey, led by the University of Exeter with the Wildlife Conservation Society (WCS), counted nests and nesting females during three nesting seasons between 2002 and 2007.

这项最新调查是由英国埃克塞特大学和国际野生生物保护学会(WCS)共同主持的，在2002年至2007年期间的三次棱皮龟产卵期内，他们统计了棱皮龟巢穴以及筑巢的雌性棱皮龟数量。

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The Smithsonian Conservation Biology Institute studies and cares for thirty-three kinds of animals there.

VOA: special.2010.06.22

It is part of a three-year conservation project which includes creating extra nesting habitats in the area.

BBC: Little tern

Massachusetts Gov. Deval Patrick, a Democrat, announced a plan in late June to reduce high energy costs in the state within the next three years through conservation measures.

CNN: Have we reached the energy tipping point?

The UNESCO Biosphere Reserve accreditation acknowledges the scientific, scenic, cultural and educational value of the area, and commits designations to the three goals of conservation, sustainable development and learning and research.

UNESCO: UK National Commission for UNESCO - Galloway and Southern Ayrshire Biosphere Reserve gives local people the chance to become Dark Sky Rangers