... flame retardant agent 阻燃剂 flame retardant bed 阻火层 flame retardant chemical 阻燃化学品 ...
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阻火层 fire barrier; flame retardant bed 庇护层；隔火层 refuge floor .
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短语
阻火层材质
Flame Arrestor
电缆竖井阻火夹层
Laminated fire retardant cable shaft
;
Fire resistance cable shaft laminated
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