R ( + ) = 右边旋转 : 缓慢向右旋转分析器(在慢速状态下) L ( - ) = 左边旋转 : 缓慢向左旋转分析器(在慢速状态下) temp=变动开关/ Temp switch : 同时按下变动开关与(+)开关或(-)开关,将会产生较快的旋转(在变动状态下) *When this switch is pressed for 2 seconds or more, the temperature of the sample chamber is indicated on the display panel (until the switch is released from pressing).