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)sliding soil滑带土sliding sash滑框slewing area转动面积slub density竹节密度sliding unit滑动单元SL cell line斜纹夜蛾细胞系Slsb Grinder修磨机slmple cycle简单循环sliding mesh滑移网格sliding seal轴封,自紧