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圆管 [yuán guǎn]
circular tube
[口腔] round tube
[口腔] round tube
- 钢管因其端部外形又分成圆管、方管、矩形管、扁圆管、P形管、异型管。
Pipe end its shape is divided into tube, square tube, rectangular tube, oblate tube, P-shaped pipe, Rectangular pipe. - 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. - 优质碳素结构钢圆管坯，高压锅炉用无缝管坯，合金结构钢管坯等均达到国标中的各项要求。
High quality carbon structural round bloom, seamless tube bloom used in high pressure boiler, alloy structural steel tube blooms are all up to the general standard.
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