SLSn.设定位置组号(位置组号设定与转移；旁瓣抑制)SLabbr.透镜分光计(=lens spectrometer)abbr.海平面(=sea level)SLF condenser直线变频式电容器sliding clamp滑动压板sliding screw滑动螺杆sliding range滑动范围slewing range变速范围sliding chair制动梁滑铁,滑板座Sliding model滑模sliding hinge滑动铰sliding bevel活动曲尺slevis handle插杆手柄