overburning meaning in English

过度烧制；过烧

The reason for crankshaft fracture in an mwmtbd234v6 diesel was analyzed . the results show that overheating and overburning is the direct reason for fracture . the heat treatment of the crankshaft is not perfect or consistent with the standard . the lubrication is not good in service . all these accelerate the fracture
分析mwmtbd234v6型柴油机的曲轴断裂原因，结果表明锻件过热过烧是导致断裂的直接原因；曲轴热处理工艺不规范、不完善，曲轴工作润滑条件不良加速了曲轴断裂