One can obtain high birefringence due toa sharp index contrast between air and silica in photonic crystal fibers.
在光子晶体光纤中，人们利用空气和氧化硅之间的高折射率对比，可以得到很强的双折射。
Dark fiber-rich whole wheat bread is lower on the index; its spike is slightly less sharp.
纤维丰富的全麦面包拥有较低的血糖指数，它造成的血糖上升很少。
He has set up limit orders for around a third of his clients to buy either a stock index fund or a commodity ETN in the event of a sharp swing.
他为大约三分之一的客户建立了限价订单，以便在发生急剧震荡的时候买进一只跟踪股指的基金，或者是一只跟踪大宗商品行情的ETN。
Sharp gains in food prices recently have driven Chinese inflation: In April, as the consumer price index rose 2.8% on-year, food prices rose 5.9%.
近期中国食品价格急剧上涨推升通胀数据：4月份消费者价格指数（CPI）年比上扬2.8%，食品价格上升5.9%。
Cutbacks in auto output contributed to a sharp drop in the official index of industrial production.
汽车产量的缩减也是促使官方工业生产指数急剧下降的原因之一。
The effects are most pronounced when temperature layers in the atmosphere produce sharp changes in air density and refractive index.
这种蜃像效应，在大气分层的温度造成大气密度剧烈变化时最为显著。
The effects are most pronounced when temperature layers in the atmosphere produce sharp changes in air density and refractive index.
这种蜃像效应，在大气分层的温度造成大气密度剧烈变化时最为显著。
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