n.半角
While the half angle increases, velocity gradient in a microdiffuser decreases and so does the average vorticity. 此外，受到流道内部速度梯度降低的影响，平均涡度值会随半角增加而下降。
entry natural converging half angle 入口自然收敛半角
The plant was growing at an angle. 植物呈一定角度生长。
I apportioned half the property to each of them. 我把财产的一半分配给他们各人。
She reckoned she had cut her cost by half. 她估计她减少了一半的费用。
I worried half the night and have a fitful sleep. 我半个晚上都一直在担心，故而时醒时睡。
