基于代数演算法的圆弧插补器，只要改变相应的几个寄存器的予置常数，就可直接插补非圆二次曲线。
The Circle Interpolator based on the algebra figuring, if we change only a few preset constants in the register, we can directly Interpolate a quadratic curves.
结论在手术病人插胃管前进行健康教育，可提高置管成功率，减轻病人心理、生理刺激反应。
Conclusions Health education for patients who are going to detain stomach tube can relieve their mental and physical stress reaction and increase success rate of detaining tube.
目的评价多导丝置管法床边盲插鼻肠喂养管的有效性、安全性。
Objective To evaluate the efficacy and safety of the multi-stylet method for bedside blind placement of nasoenteral feeding tubes.
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