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[物][数]参考系
1、reference───vt.引用；vi.引用；n.参考，参照；涉及，提及；参考书目；介绍信；证明书
2、buyers reference───买家参考
3、cooling systems───冷却XiTong
4、access systems───存取XiTong
5、reference standard───[经管]参考标准
6、reference books───参考书目；[图情]参考书；工具书（referencebook的复数）
7、repellent systems───驱避XiTong
8、systems───n.XiTong；体制，体系；制度（system的复数）
9、reference libraries───n.参考书阅览室( reference library的名词复数 )
1、is necessary to unify different geodetic reference systems in order to realize comprehensive utilization of surveying achievement in different systems.───为综合应用不同参考坐标系中的测量成果，必须实现不同参考坐标系的统一。
2、Evolution of Plane Reference Systems of Tianjin Port and Establishment of the Conversion Relations───天津港平面坐标系的演变及相互转换关系的确立
3、Preserving accuracy when using a 2-D map requires understanding spatial reference systems and using them appropriately.───使用2-D地图时保持精确度需要理解空间引用XiTong并合理使用。
4、These models will provide reference systems, experiment systems and IP flow processing scenarios for future studies.───这两个参考模型将为集群路由器的后续研究提供参照XiTong、实验XiTong和IP流处理场景。
5、The progress in transformation between the celestial and terrestrial reference systems───天球参考系与地球参考系之间的坐标转换研究进展
6、A survey into the varying causes of electromagnetic-field quantities in different reference systems───对电磁场量在不同参照系中变换原因的深入探讨
7、Deciding when to introduce a leap second is the responsibility of the International Earth Rotation and Reference Systems Service.───国际地球自转服务组织负责决定何时加减闰秒。
8、Preserving accuracy when using a 2-d map requires understanding spatial reference systems and using them appropriately.───使用2 - d地图时保持精确度需要理解空间引用XiTong并合理使用。
9、Metrological traceability and reference systems in laboratory medicine───临床检验量值溯源与参考XiTong
1、Deciding whether and when a leap second is needed falls to an international organisation called the International Earth Rotation and Reference Systems Service (IERS).