特殊用法asbestos mattress1.石棉褥ballast mattress1.沉碴垫层double-thickness air-filled mattress1.双层气垫Dutch mattress1.荷兰式柴排rubber mattress1.橡胶垫spring mattress1.弹簧垫子straw mattress1.草垫子wired mattress1.夹钢丝的(玻璃纤维)垫, 金属网棉毡, 夹层棉毡