From 7c814813f5c9d4ac1d7c75032b957343d5a41480 Mon Sep 17 00:00:00 2001
From: pengzhendong <275331498@qq.com>
Date: Tue, 9 Jun 2026 16:44:04 +0800
Subject: [PATCH] fix: support L (liter) unit and number+unit denominator in
 Measure (#306)
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- Add L → 升 to units_en.tsv
- Allow denominator in X/Y patterns to be measure (number+unit),
  not just bare unit. This enables 4.5L/100km → 每一百公里四点五升
---
 tn/chinese/data/measure/units_en.tsv | 1 +
 tn/chinese/rules/measure.py          | 2 +-
 2 files changed, 2 insertions(+), 1 deletion(-)

diff --git a/tn/chinese/data/measure/units_en.tsv b/tn/chinese/data/measure/units_en.tsv
index 4142e4f6..24bf3ce8 100644
--- a/tn/chinese/data/measure/units_en.tsv
+++ b/tn/chinese/data/measure/units_en.tsv
@@ -41,6 +41,7 @@ kw	千瓦
 kW	千瓦
 lbs	磅
 lb	磅
+L	升
 m2	平方米
 m²	平方米
 m3	立方米
diff --git a/tn/chinese/rules/measure.py b/tn/chinese/rules/measure.py
index 1d2bf107..f5ecb4af 100644
--- a/tn/chinese/rules/measure.py
+++ b/tn/chinese/rules/measure.py
@@ -58,7 +58,7 @@ def build_tagger(self):
 
         # 10km/h
         rmsign = rmspace + delete("/") + rmspace
-        tagger |= insert('numerator: "') + measure + rmsign + insert('" denominator: "') + units + insert('"')
+        tagger |= insert('numerator: "') + measure + rmsign + insert('" denominator: "') + (measure | units) + insert('"')
         self.tagger = self.add_tokens(tagger)
 
     def build_verbalizer(self):