Based on grey system theory, a weighted grey correlation model is built, the composite efficiency of mechanical equipments is evaluated to supply a reference for equipment optimization.

以灰色系统理论为基础，建立加权灰关联分析模型，对机械设备进行综合效益评价，为设备选优提供决策依据。

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You can combine internal and external RFID Web services into a composite application in an internal SOA to increase operational efficiency.

可以将内部和外部RFID Web服务组合为内部SOA中的组合应用程序，以提高操作效率。

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Thestructural system of umbrella elements is a new kind of composite structure merging architecture art and structure technology, and has good structural efficiency and comprehensive economic index.

伞形单元结构体系是一种融建筑艺术与结构技术于一体的新的组合结构形式，具有较高的结构效能和综合经济指标。

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The 787 is the first airliner made mostly from lightweight composite materials, which increases an aircrafts fuel efficiency.

BBC: Dreamliner: No fault found with Boeing 787 battery

Part of the Dreamliner's appeal to airlines is its increased fuel efficiency due to its construction of lightweight composite materials instead of metal.

CNN: STORY HIGHLIGHTS

Airbus' A380 superjumbo and Boeing's upcoming 787 Dreamliner both use new engine designs, lightweight composite materials and advances in aerodynamics to improve performance, increase fuel efficiency and lower emissions.

CNN: Flight of biofuel fancy?