plain round bar.
光面圆钢筋

Quality carbon structural plain bar
优质碳结圆钢

Study on skew law of plain roller rolling square bar.
平辊轧制矩形件脱方规律的研究

Cape becomes bar, and plain shoal, and valley and gorge deep water and channel.
岬角成了沙洲和浅滩，溪谷和山峡成了深水与湖峡。

The heaving bar on the second floor cannot detract from the fact that the restaurants food is just plain good.
二楼的吧台没有掩盖餐厅美味食物的光环。

While in straightening various kinds of section bar and plates, plain barreled roller straightening machine will be used to straightening much more.
而在矫直各种型材和板材时, 多用平辊矫直机来进行矫直。