open coil annealing是什么意思

用法例句

The self-integrating course of special steel wire coils annealing strong convection bell-type annealing furnace is introduced,and the main furnace data,new technology and main characteristic in the furnace are also introduced.

介绍了特殊钢盘卷退火强对流罩式炉自主集成过程、炉子的主要技术参数、设计中采用的新技术以及炉子的主要特点。