Unverified82% confidenceDecision RuleTime unknown
内膨胀（内爆）螺栓与外膨胀（拉爆）螺栓适用不同场景：外膨胀（带外露螺杆）适合固定较厚部件；内膨胀（打入式内牙套管）安装后表面平整，适合天花吊顶、需二次拆装或表面美观场景
1
Sources
82%
Confidence
Long-term
Relevance
-
First Seen
Sources
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