设置ConvertNumMode为3

Tencent/ASRApi.cs

@@ -45,6 +45,7 @@ namespace WingASRService.Tencent
                 req.Url = url;
                 req.VoiceFormat = fileType;
                 req.UsrAudioKey = "any";
+                req.ConvertNumMode = 3;
                 // 返回的resp是一个SentenceRecognitionResponse的实例，与请求对象对应
                 var resp = client.SentenceRecognitionSync(req);
                 return (message: resp.Result, isSuccess: true);