“GRIN optics can be shaped to fit a system, rather than making the system conform to the optics, resulting in reduced size, weight and assembly cost.
汤普金斯说：“梯度折射光学器件可根据系统设计，而不是让系统符合光学器件，因此上降低了系统的体积、重量和组装成本。”
That question encompasses the total cost of the system, including assembly labor-especially in larger letter sets where the savings can really add up.
问题围绕着系统的总成本，包括组装，尤其是会增加费用的大型发光字。
The utility model has the advantages of simple structure, and easy assembly and maintenance, and moreover, the cost of a truck frame and a suspension system can be lowered.
本装置结构简单，可大大降低车架及悬挂系统的造价，易于总装及维修。
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