Unverified83% confidenceTradeoffTime unknown
保温效果与重量存在权衡:真空双层不锈钢保温性能好但重(500-800g),单层或PP盒轻但不保温。学校有加热设备(蒸饭箱/微波炉)时可选轻便款,无加热则需保温款
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