电机轴承上的SPM-Nipples 是什么意思? measuring devices such as spm nipples fitted to the bearings(在网上找到这么一句话,网址是 http:///cawp/auabb504/bd9f800dd0dfb30aca256b8300019d75.aspx ,可见, spm nipples is some kind of measuring devices 你看spm的这个解释是否合理: strokes per minute 冲程每分钟 查看更多