Objective to develop an improved adjustable bilateral aiming device to substitute the old single-side one to guide lateral arch screw insertion of axis.

目的针对单侧可调式枢椎椎弓螺钉定位器的不足，研制改进出一种双侧可调式侧方椎弓定位器。

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The variational momentum of the zero position is that the sighting line of object space changing quantity after the fire, is the quantitative evaluation target of the optic aiming device.

零位走动量即瞄准线射击前后变化量，是光学瞄具稳定性定量评价指标。

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Conclusion: Using the manual aiming device for the cervical pedicle for screw placement can improve the accuracy and safety during operation, and this device can be applied and popularized clinically.

结论：手持式颈椎椎弓根螺钉置钉瞄准器可提高置钉的准确性和安全性，有临床应用前景。

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So in contrast to a more differentiated notion of device usage, Apple is aiming for a unified one.

FORBES: The iPhone 5 Is The Next Apple Screen Built To Consume Paid Media

By aiming to have one platform run across multiple device footprints, they can leverage the support and tools from the desktop version of Ubuntu and put them into a mobile device running the same code, but with a mobile UI layer on the top.

FORBES: Ubuntu Mobile Shows The Way For The Whole CE Industry

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