用途：台车式电阻炉系周期作业式电炉，可供大中型金属机件和材料的正火、淬火退火等热处理和加热之用。
Applications: the bogie hearth electric resistance furnace is a batch type furnace, it is used for normalizing, quenching, annealing and other heat treatments of large or medium metal parts.
了解作业的生命周期。
检索作业和返回结果至少要耗费两个轮询周期，并且根据节点处理作业实际花费的时间，可能会耗费更多周期。
It takes at least two polling cycles to retrieve a job and then return results, and it could take additional cycles depending on how long the job actually takes to process on the node.
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