VR2R-0307_r1

VR2R-0307

① SA Source

• Source: 開啟完整 SA 文章
• Section: PCB vs Flyover Cables
• Line hint: 276

Context Before

Dielectric loss is driven by the energy absorption nature of the dielectric materials.

Evidence

Dielectric materials, resins and glass fiber cloth, provide insulation and mechanical reinforcement function for the PCB traces.

Context After

At high frequency, high-speed signal doesn’t simply travel through the copper traces, the signal travels as an electromagnetic wave with electric field extending into the dielectric materials.

② Atomic Claim

Dielectric materials、resins 與 glass fiber cloth 為 PCB traces 提供 insulation 與 mechanical reinforcement。

• Epistemic Mode: ASSERTED
• Mapping Status: PARTIAL

③ Semantic Frame

{
  "attribute": "DIELECTRIC_MATERIAL_FUNCTION",
  "context_nodes": [],
  "entity": {
    "id": "04_knowledge_base/PCB",
    "label": "PCB"
  },
  "frame_type": "ATTRIBUTE",
  "qualifiers": {
    "condition_text": null,
    "numeric_mentions": [],
    "temporal_mentions": []
  },
  "value": {
    "numeric_mentions": [],
    "value_text": "dielectric materials, resins and glass fiber cloth insulate and mechanically reinforce PCB traces."
  }
}

④ Canonical Entity Mapping

Role	Surface Label	Canonical Target
entity	PCB	PCB

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。