They then cascaded the negative index medium with a positive refractive index medium so that the complete nanostructure behaved as one with an index of refraction of zero.

他们将负折射率材料和正折射率材料级联起来成功实现了零折射率行为的纳米结构。

youdao

In the medium term, not all effects are negative.

从中期角度来说，并不是所有影响都是消极的。

youdao

The article mainly analyzes the positive function and the negative effect of the contemporary medium culture.

且当代媒介文化也有着一定的积极功能和负面效应。

youdao

If the negative momentum remains intact near and medium term, the bears could force a test of that zone during the first quarter.

FORBES: Technical Trading: Gold under Pressure -- Eyeing FOMC, Jobs Data

Overall, the net impact of all these policy actions is likely to be slightly negative for growth potential, at least in the medium term.

FORBES: Barclays' Take On China's Muni Debt 'Crisis'

Those who see weaker prices next week said, while gold might be oversold in the short-term, the medium-term technical picture has turned negative and that could lead to weaker prices, even as geopolitical worries heat up, such as saber-rattling by Iran over possibly closing the Straits of Hormuz, a key shipping lane for oil transportation.

FORBES: Survey Participants See Higher Gold Prices Next Week