SLDn.双倍左移(图纸的装箱单日；拉门；减速；螺线管)SLabbr.透镜分光计(=lens spectrometer)abbr.海平面(=sea level)sliding model plate滑模sliding correlation滑动相关sliding side saddle活动侧鞍座sliding sash window推拉窗sliding fifth wheel滑动牵引座sliding modecontrol滑模变结构控制slone potentiometer互导调整电位器sliding window flow滑动窗口流程sliding window size滑动窗口尺寸sliding guide piece滑动导卫