Unverified75% confidenceFactTime unknown
气泡膜按卷购买时以「宽度×长度」标注，如50cm×100m，实际可用面积受气泡拉伸影响会略缩水；标称越薄单卷同重量可绕长度越长
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75%
Confidence
Long-term
Relevance
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