An optimization model for the body-in-white (BIW) of a commercial vehicle cab is set up with natural frequency as constraint and minimizing the volume of welding spots as the objective.

为某一商用车驾驶室白车身建立了以固有频率为约束条件，焊点体积最小化为目标的优化模型。

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The frequency and intensity of urban heat island in commercial landscape, industrial landscape, residential landscape and forest landscape were studied through fixed point measurements.

通过定点观测的方法对商业区、工业区、社区和森林公园的热岛发生频率及其强度进行了研究。

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Probable reasons for frequency differences of different speech acts in commercial advertising slogans are also explored.

因此，与断言言语行为和承诺言语行为相关的商业广告标题语较其他标题语出现的频率更高。

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"We should not wait for a serious incident before deciding upon an appropriate degree of regulation - not something heavy handed but something recognising that both the frequency and size of these huge commercial cycling events have greatly increased, " he said.

BBC: New Forest cycle event organisers 'baffled' by criticism

As winner of an exclusive FCC frequency license in 2006, Aircell has built a revolutionary new mobile broadband network for commercial and business aviation.

ENGADGET: Aircell announces world's first 'airborne smartphone'