To alter the gradient of land surface for decreasing the energy of flow.

二是改变地表的坡度，减小水流的能量。

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There is no question that the United States imports a great deal of energy and, in fact, relies on that steady flow to maintain its economy.

毫无疑问，美国进口了大量的能源。而事实上，美国依靠这种稳定的流动来其维持经济。

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Unfortunately this early plant experienced the problem common to many forms of renewable energy: the flow in the Wey River was unreliable, and the waterwheel was soon replaced by a steam engine.

不幸的是，这个早期的工厂遇到了许多可再生能源形态都遇到的问题：韦河的水流不稳定，而水车很快就被蒸汽机取代了。

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system is the opposite of the open system, no mass and no energy can flow through the boundary.

孤立系与开系正相反，没有质量或能量,能流过它的边界。

麻省理工公开课 - 热力学与动力学课程节选

And you can get to things like the macro-stressed insure, and energy flow in a much more robust way than you can even in an advanced course of magnetism.

所以你便可以更形象地理解,像微粒，能量流动,等概念,你甚至可以,比在高级课程更讲的程度深。

麻省理工公开课 - 媒体、教育、市场课程节选

The interplay of a wood ceiling, walls constructed from boards of differing lengths, and wood floorboards laid at an angle give the design a remarkable feeling of energy and flow.

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The escapement is the crucial component of a mechanical watch, controlling the flow of energy through the movement and producing that familiar ticktock sound.

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