1)  1:500 digital line graphic
1:500数字线划图
1.
Based on the experimental study on producing 1∶500 digital line graphic in hill area using low-altitude digital photographic system,this paper summarized the technical flowchart and working method for producing 1∶500 digital line graphic in hill area using small format digital image acquired by low-altitude digital photographic system.
通过对低空数字摄影系统在山地区域制作1∶500线划地形图试验研究,总结了利用低空数字摄影系统获取的小像幅数码影像生产山地区域1∶500数字线划图的工艺流程和作业方法,着重阐述了提高成图精度及质量的有关措施。
2)  1/±∞
1/（±∞）
3)  ∥A~(-1)∥_∞
∥A~（-1）∥_∞
4)  1°×1°guid
1°×1°网格
5)  1:1 performance
1:1性能
1.
In order to meet the needs of electro-bicycle s development, a computer aided test system for measuring 1∶1 performance of electro-bicycle is established.
为满足电动自行车的发展需要,研发了一种用于电动自行车1∶1性能检测的计算机辅助系统。
6)  1:1 power assistant system
1:1助力
参考词条
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1.象声词。
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