Much of this business involves retrofitting existing planes.

这项业务主要是改造更新现有的飞机。

柯林斯例句

Retrofitting of furnace body , burners and piping in the furnace is presented.

主要论述了辊底式无缝钢管退火炉在炉体 、 燃烧、管道等方面的技术改造.

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Retrofitting roller clutch, parking can slow mainframe operation, and Mexico will not dry up.

网纹辊加装超越离合器, 主机停车时能低速运转, 使墨不致干涸.

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Many safety gurus express greater concern about the products after - market vendors come up with for retrofitting.

许多安全问题专家表示,他们对汽车修配件市场提供的汽车改型用的产品越来越担忧.

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