DEF词汇全2 ... Cioffé 71.7YI. 被梳理的,头发梳好的 circonstance n.f. 情况,时机 circuit n.m. 周围,圈子,电路 ...
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With outspread wings, it flew in a large circle over Heidi's head.
它展开翅膀,在海蒂的头上飞了一大圈。
Therefore, the real estate industry is in dispute with the academic circle over the significance of the value-added tax.
为此,房地产实业界和学术界对土地增值税的存在意义进行了激烈争论。
Because the airport is often congested, aircraft are frequently directed to circle over the capital, increasing the misery.
因为机场往往“机”满为患,飞机频繁地被告知必须在首都上空盘旋打转,这徒增噪音之大给人们带来的痛苦。
Over the next ten minutes it grew into a white circle.
VOA: special.2009.07.22
When a particle moves in a circle, it has an acceleration towards the center of this size, v^2 over R.
当一个质点在圆周上运动时,它有一个指向圆心的加速度,v^2 / R
Whenever you see a particle moving in a circle, even if it's at a constant speed, it has an acceleration, v square over r directed towards the center.
只要看到质点做圆周运动,即使是匀速圆周运动,也存在一个加速度,大小为 v^2 / r,方向指向圆心
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