On Framework of Regional Eco-industrial System

Accelerating the improvement of urban industrial ecological system;

加快城市工业生态系统建设；

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Initial application of game theory in the industrial ecological system

博弈论方法在工业生态系统分析中的应用初探

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To validate the effectiveness of these indicators, the sulfur element metabolism network in Lubei EIP was taken as major case study. Comparison among several other natural ecosystem and IES cases were carried out in addition.

以山东鲁北EIP的硫元素代谢网络为例进行了深入的案例研究，并在几个工业生态系统和自然生态系统案例之间进行横向比较，研究结果表明方法的有效性。

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This thesis carries on a study of ecological plan on DD port respectively from three aspects: industrial ecosystem, ecological management and some policies etc.

本文主要从工业生态系统、生态管理和政策、措施三个方面对双D港进行生态规划研究。

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These analysis methods are powerful tools for the management and maintenance of the industrial ecosystem.

这些分析方法将是辅助工业生态系统日常管理与维护的有力工具。

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In the classical period, piano duo was presented to the audience by W.A.Mozart and his sister and this kind of style became well-known and flourishing.

在古典时期，由于钢琴的诞生和天才作曲家莫扎特与姐姐的双钢琴二重奏的演出，把双钢琴这种演奏形式展现给了世人。

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I don't think I know of any Duets for Piano and trumpet.

我想我从未听说过有什么钢琴与小号的二重奏。

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Piano duo is one of the styles of piano ensemble which is also a collaborative style of piano performance on stage.

双钢琴是钢琴二重奏的一种表现形式，也是舞台上以两架钢琴合作形式出现的钢琴演奏。

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A duet for violin and piano

小提琴和钢琴的二重奏曲

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It appeared on musical stage in Mozart time, and then many composers wrote a lot of piano duet works, which were excellent repertoire to study as well as performance.

莫扎特时代这种演奏形式开始走向音乐会舞台，随后很多作曲家都专门创作了钢琴二重奏作品，成为后人学习和演奏的优秀曲目。

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He wrote a quantity of piano duets ( one piano, four hands), a form of music which has attracted few composers;

他还谱写了大量的钢琴二重奏（即一个钢琴，四手联弹），这种音乐形式，作曲家很少有人感兴趣；

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At the second desk was a half-finished set of Beethoven's symphonies that Czerny was arranging for piano duet for another publisher.

第二张桌子上是完成了一半的贝多芬交响曲，是车尔尼为另一个出版商改编的钢琴二重奏。

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On Teaching Piano Duet

钢琴二重奏教学探倪

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Piano Music for Four Hands and Piano Duet

四手联弹和双钢琴二重奏

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Performance part for piano duet.

钢琴二重奏性能的一部分。

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D675.Overture in F for piano duet.

序曲钢琴二重奏楼。

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In May, the Hong Kong government began destroying nearly 30 tons of confiscated ivory, which wildlife campaigners called an important step to emphasize the illegality of trafficking products made from elephant tusk.

今年5月，香港政府开始销毁近30吨收缴的象牙。野生动物保护活动人士称这是重要的一步，突显出贩运象牙制品是非法的。

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Trade in ivory was banned in 1989 under the Convention on International Trade in Endangered Species, but products that were commercially available before then can still be sold.

1989年，按照《濒危野生动植物种国际贸易公约》（Convention on International Trade in Endangered Species）的规定，象牙贸易受到禁止，但该公约颁布前就在商业领域流通的象牙制品依然可以销售。

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Conservationists estimate that more than 25000 elephants are killed across Africa each year so their tusks can be extracted for ivory.

据环保人士估计，每年超过25000头非洲大象被杀害，其象牙被拔出用于制作象牙制品。

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An ivory merchant displays his goods in a shop in Abidjan, Ivory Coast, on December 15.

12月15日，在科特迪瓦阿比让的一家商店，一个象牙商人正在展示他的象牙制品。

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