全部主张 / 航海、天文与测量
钢制龙骨使郑和宝船获得更强动力
判定边界
双方证据链未闭合（本轮），不是双方等真，也不是给视频主张背书。
视频原话摘要
增其动力
- 领域
- shipbuilding
- 涉及对象
- 郑和宝船；钢制龙骨
- 声称年代
- 明代；永乐年间
- 话语角色
- 作者主张
双轨条件矩阵
H_VIDEO 与 H_MAIN 独立列出必要条件、正向预测、反证条件、替代机制、形成链和协调伪造规模。
| 模型 | 条件类型 | 条件 | 评估 | 关联证据 |
|---|---|---|---|---|
| H_VIDEO | necessary_condition | 钢制龙骨必须先成立；并须有钢材导致更强推进力的结构/流体/动力学机制；机制须适配明代船型 | input_limited | |
| H_VIDEO | positive_prediction | 同期设计、试验、工程记录或可复核模型显示龙骨材料改变推进性能 | input_limited | |
| H_VIDEO | disconfirmer | 只有材料断言而无动力机制；帆、季风或船体优化已解释航行；推进器证据缺失 | input_limited | |
| H_VIDEO | alternative_mechanism | 风帆与季风；船体尺寸/操纵改进；“动力”是修辞或ASR误词 | input_limited | |
| H_VIDEO | formation_chain | 钢龙骨→结构性能→推进机制→航行结果 | input_limited | |
| H_VIDEO | fabrication_or_coordination_scope | none;需要机制证据，不要求制造协同 | input_limited | |
| H_MAINSTREAM | necessary_condition | the steel-keel claim must first be true; a mechanical model must link keel material to propulsion power; propulsion mode, hull form, loading and sea state must be controlled; evidence must be vessel-specific | input_limited | |
| H_MAINSTREAM | positive_prediction | a quantified model or trial should show a steel keel increases usable thrust or speed under matched sail/oar/engine conditions | input_limited | |
| H_MAINSTREAM | disconfirmer | steel may increase longitudinal strength or stability without creating propulsion; sail, oar, hull form, wind and current may explain performance; no vessel-specific link | input_limited | |
| H_MAINSTREAM | alternative_mechanism | stronger longitudinal structure; improved survivability; later engineering retrofit; rhetorical leap from material to power | input_limited | |
| H_MAINSTREAM | formation_chain | FC-F5-C20 | input_limited | |
| H_MAINSTREAM | fabrication_or_coordination_scope | not_required_by_claim_logic | not_applicable_by_claim_logic |
推理桥梁
H_VIDEOotherinput_limited
材料存在→动力更强；“增其动力”→蒸汽推进
H_MAINSTREAMotherinput_limited
material→structural property→hydrodynamics/propulsion→observed performance
审计字段与说明
- 终态方法
- dual_track_evidence
- 音频核验
- asr_ambiguity_retained
- 研究备注
- 冻结命题与矩阵终态逐 ID 对齐；非事实 lane 不转写为历史胜负。