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250~300,50~100 150~200,150~200 150~200,50~100 50~100,50~100
100~150mm 120~150mm 150~180mm 150~200mm
50一100mm 100-120mm 100-150mm
50~80mm 80~90mm 100~150mm
应分别安装在沟道两边的支架上 应安装在沟道同侧的支架上 不能安装在沟道同侧的支架上
150~200mm 300~350mm 350~450mm
可直接放于沟底或电缆支架上 可直埋于沟底 不能放于电缆支架上
50-80mm 80-90mm l00-150mm