Use you Pencil Tool (n) to draw a small circular shape.

你使用铅笔工具(n)为制定一个小圆形形状。

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CONCLUSION Rhubarb has exciting actions on isolated antral circular strips of guinea pig, which is partly mediated via cholinergic M receptor, cholinergic N receptor and L-type calcium channel.

结论大黄对豚鼠胃窦环行肌条的收缩活动有兴奋作用。 大黄的这一兴奋作用部分经由胆碱能M受体、胆碱能N受体和L-型钙通道介导。

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The hydrodynamic lubrication performance of rectangle, inclined plane, circular-arc, triangle, multi-arc and sine surface texture was researched with CFD method based on N-S equation.

采用基于N - S方程的CFD方法，研究矩形、斜面台阶形、圆弧形、三角形、多圆弧形以及正弦形织构表面的动压润滑性能。

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To make a gadget called the Can Pump N' Pour, a circular hard plastic ring with a rubber cover that keeps the fizz in opened soda cans, Davison engineers went through 30 different versions with its own moldmaking machines before getting the shape right.

FORBES: Inside InventionLand