special parts短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 专件 Communication with Fab to improve tools and special parts performance. 同生产部门沟通，改进设备和备件的性能和可靠性。 hr33 For these common problems in mechanical machining, special fixtures for two special parts, a forked part and a steering joint, were designed and accordingly two proper processes were introduced. 针对上述一般机械加工中常见的问题，本文介绍了某叉形零件和转向管接头车削专用夹具的设计和适用于大、中型孔的两种加工方法。 cnki