自行对中->自动对中。翻译可根据语境灵活处理。

This paper described the automatic alignment of the measured part in Y9025-B roundness measurement instrument. The system operation principle ,data acquisition,stepmotor control and software were discussed.
对Y9025—B型圆度仪中被测工件的自动对中部分作了较为详细的介绍，其中包括基本工作原理、数据采集、电机控制及有关的软件框图等。
评价 添加词条 短句来源

By improving the part structures of main drive, roll exchange, strip break proteCtion, press roll and adopting new facilities such as sleeve automatic alignment and airblowing guide plate, the production capacity, realibility, safety and adaptability havebeen raised remarkably.
通过对主传动装置、换辊装置、断带保护装置、压辊等部件的结构改进和套筒自动对中，吹气导板等新设施的应用，使轧机生产能力、工作可靠性及安全适用性有了显著提高。