导轨高度有350 mm、400 mm、500 mm、600 mm可选
主体支架有带或不带落射照明臂可选。带落射照明臂主体支架有一个D1N母头燕尾槽，燕尾槽中心距导轨边缘196.5mm。不带落射照明臂的主体支架导轨顶部有更大的安装空间
导轨95mm宽的线性燕尾安装面，可灵活安装模块在导轨任意位置
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