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 supporters滑动支座Sliding partitions活动滑板sliding-velocityn.滑移速度sliding door catch拉门门扣Sluder's neuralgiasleeep deprivation睡眠,剥夺sliding technology滑频技术sloar-cell motor太阳能电动机sliding scale wage浮动工资制sliding box feeder箱式定量器,箱形给料器,移箱式给料器