VR2R-0352_r1

VR2R-0352

① SA Source

• Source: 開啟完整 SA 文章
• Section: PCB Materials Upgrade and Area Growth
• Line hint: 304

Context Before

Quartz cloth is the next generation material that replaces the glass fiber cloth materials as the reinforcing layer, pushing dielectric constant even lower.

Evidence

Besides lower dielectric constant, quartz cloth also has the benefits of being stronger, more temperature resistance

Context After

, and having a lower CTE. On the other hand, the cost is multiples higher than that of the highest-grade glass fiber cloth and is much harder to process at the PCB manufacturing level, leading to worse yield.

② Atomic Claim

除了較低的 dielectric constant，quartz cloth 還更強、耐溫性更高……

• Epistemic Mode: ASSERTED
• Mapping Status: PARTIAL

③ Semantic Frame

{
  "frame_type": "CLAIM_ONLY",
  "qualifiers": {
    "condition_text": "continues in VR2R-0353",
    "numeric_mentions": [],
    "temporal_mentions": []
  },
  "reason": "EXTRACTION_FRAGMENT_LISTS_QUARTZ_CLOTH_PROPERTIES",
  "statement": "quartz cloth offers lower dielectric constant, greater strength, and higher temperature resistance…"
}

④ Canonical Entity Mapping

Role	Surface Label	Canonical Target
—	—	—

⑤ Human Review

請在 Properties 逐項確認：

• 原文 → Atomic Claim 是否忠實
• Atomic Claim → Semantic Frame 是否忠實
• Canonical Entity mapping 是否正確
• Epistemic mode 是否保留原文語氣
• 最後選擇 review_action

Review state

Markdown 內文不是正式 approval。只有 Apply bridge 寫入的 Decision Ledger event 才是正式決策。