To avoid charges of favouritism, central Banks should buy index funds or individual securities in proportion to market cap on transparent and organised security exchanges.5.

为了避免徇私，央行必须在透明、有组织的股票交易所买入指数基金或者按市场份额买入个股。

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The researchers placed a silicon nitride waveguide on a transparent nanoporous silicon oxide substrate that they specially developed to have a much lower refractive index than that of the waveguide.

其做法是在纳米级氧化硅透明衬底上生长氮化硅波导，衬底的折射率远小于波导。

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The refraction index of transparent glass-plate was measured with ray-displacement method, formulas of the refraction index and experimental error were obtained by theoretical analysis.

采用光束位移法测量了透明玻璃板的折射率，分析了折射率的公式和实验误差处理公式。

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Transparency International recently ranked Angola a lowly 168 out of 182 countries in its " Corruption Perceptions Index" but Dos Santos says that the fund will be beholden to international best practices, and transparent.

CNN: Oil-rich Angola bids to secure future with $5bn wealth fund

Although this index has been in existence for more than 20 years, it is only recently that data has become transparent enough to allow it to accurately and appropriately track the performance of equity real estate.

FORBES: A Guide To Real Estate Derivatives