来自越南的邱18岁时被偷偷带过边境进入中国。

Thu, from Vietnam, was smuggled over the border into China when she was 18.

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邱和思门(1971)研究了在圆管和方形管中输沙时具有螺旋运动的水流的水头损失问题。

Chiu and Seman (1971) studied the head loss of flows transporting sediment in circular and square pipes with spiraling motion.

youdao

邱和思门(1971)研究了在圆管和方形管中输沙时具有螺旋运动的水流的水头损失问题。

Chiu and Seman (1971) studied the head loss of flows transporting sediment in circular and square pipes with spiraling motion.

youdao