However, to construct the middle-range theory is not only a part of the rational strategy but also a part of the legitimate strategy.

而建构中层理论既是合理化策略的一个组成部分，也是合法化策略的一个组成部分。

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This is based on the theory that close-range, nonbonded interactions are repulsive, i.e. Steric strain.

这基于这样的理论，即近距离，非键相互作用是排斥的，即立体应变。

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The model can range across markets and go short (bet on falling prices) as well as long, so the theory is that there will always be some kind of trend to exploit.

该模型可涵盖整个市场范围，可卖空（跌价下注）以及买进，因此该理论认为总是存在某种可以利用的趋势。

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In theory, a wide range of improved materials could be made in nanocrystalline form: more proof that small is beautiful.

ECONOMIST: Nanotechnology

The heliocentric theory answered these questions and suggested a whole range of useful hypotheses about the rest of the universe.

FORBES: Why The Paradigm Shift In Management Is So Difficult

These were set up in 1993, and were the first in Britain to offer a comprehensive range of practical television skills to complement the usual cultural theory.

ECONOMIST: Education: Degrees of choice | The