... alignment procedure；对准步骤 alignment sleeve；对准套筒 alignment tool；对准工具 ...
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alignment sleeve
定位套
以上为机器翻译结果，长、整句建议使用 人工翻译 。
Sleeve axis is always perpendicular to railway sleepers, ensuring quick and accurate alignment. The average working efficiency is 1.5 times that of double end wrench.
套筒轴线始终垂直于轨枕面，对位快速、准确，平均工作效率为双头的1.5倍。
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