Secondly, the single offset reflector antenna and dual offset reflector antenna are studied and designed.

其次分别对单偏置反射面天线、双偏置反射面天线进行研究和设计。

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Mr Bell said that reflecting these strong male images, girls can be less confident than boys in class - and he said some schools were experimenting with single-sex classes to offset this.

BBC: NEWS | UK | Education | Buffy to slay girls' meekness

But lower demand will be offset by a scheme to phase out single-hull ships on environmental and safety grounds in European and North Atlantic waters.

ECONOMIST: Shipping in the downturn

While there isn't a single formula for assembling a salad in the French style, the best ones offset crisp lettuce with savory, succulent bites of meat, cheese and seasonal vegetables.

WSJ: Eric Ripert's Artichoke, Fennel and Arugula Salad