With the iPhone 4, Apple changed the design of its antenna, embedding it in the steel-frame chassis.

新的iPhone 4中，苹果改变了其天线的设置，将其嵌在了有钢制框架的底座中。

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Normally, loader crane dealers custom-fit a frame of steel bar on top of a truck chassis to mount the crane.

通常， 装载起重机经销商随俗地在卡车底盘顶部设置铁杆梯架登上起重机。

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For instance, the Audi A8 not only has a 372 horsepower engine that provides exhilarating driving characteristics, but it also has an aluminum space frame that lowers vehicle weight considerably versus a steel chassis.

FORBES: Growing Audi Across the Atlantic