The background graph is what is specified by a query's FROM clause, by the sparql command's — data switch, or by passing a model to QueryExecutionFactory.create when using Jena's API.
在使用Jena的API时，通过某个查询的FROM子句、sparql命令的——data开关或者通过向QueryExecutionFactory . create传递一个模型来指定的图。
Sixteen of these early hybrids still service Genoa, Italy, where drivers switch from diesel to electric power when passing the city's downtown architectural treasures.
这些早年的混合动力车至今仍有16辆服务于意大利的热那亚。在热那亚，途经城市市区的建筑瑰宝时，司机就会把柴油动力转换成电力动力。
Only after passing the exam and an education background check can they switch to a new major.
学生只有在通过考核和学历背景调查后，才能转到新专业就读。
With slightly less talented passers, switch to direct, high tempo passing and play down the channels.
如果较少天才传球手，切换战术为直接，快速传球和边路活动。
An experimental unit for measuring instantaneous speed of high speed train passing through tunnel with a photoelectrical switch is designed.
设计了一套采用光电开关测量高速列车进出隧道瞬时速度的实验装置。
Train track occupancy recognition is to determine if the train is passing over a switch and to supply reliable information for train positioning system and train control system.
列车轨道占用识别目的是在平行的多轨道区域识别列车所占用的轨道信息，为列车定位子系统或控制系统提供可靠的信息。
It investigates the focal switch phenomenon of a tilted phase L-G beam passing through a system with the aperture and lens separated.
研究了相位倾斜l - G光束通过光阑——透镜分离系统的焦开关现象。
It investigates the focal switch phenomenon of a tilted phase L-G beam passing through a system with the aperture and lens separated.
研究了相位倾斜l - G光束通过光阑——透镜分离系统的焦开关现象。
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