One drumdiameter has varied diameters of shaft and central spans so that the designers may have choice.
同一种滚筒直径又有几种不同的轴径和中心跨距供设计者选用。
2
The coal washing plant steam boiler drumdiameter is larger than other boiler manufacturers, stable output, high quality steam.
水洗厂燃煤蒸汽锅炉锅筒直径比其他锅炉厂家大，运行稳定出力足，蒸汽品质高。
3
It is pointed out that each belt drumdiameter is corresponding to an optimum belt thickness, and steel belt with optimum thickness should be coiled to obtain the maximum fluid lift.