参考文献模型校对换阿里云百炼，完善各种校对细节

application/common/PubmedService.php

@@ -60,8 +60,8 @@ class PubmedService
         $pmid = trim($pmid);
         if ($pmid === '') return null;
 
-        // v2：解析结果新增 journal_iso_abbr / journal_medline_ta，换 key 避免命中旧缓存
-        $cacheKey = 'pmid_v2_' . $pmid;
+        // v3：解析结果新增 language / journal_country / affiliations，换 key 避免命中旧缓存
+        $cacheKey = 'pmid_v3_' . $pmid;
         $cached = $this->cacheGet($cacheKey, 30 * 86400);
         if (is_array($cached)) return $cached;
 
@@ -254,6 +254,31 @@ class PubmedService
             }
         }
 
+        // 文献语种：PubMed 用三字母代码（eng/chi/ger…），一篇可有多个
+        $languages = [];
+        $langNodes = $xp->query('//PubmedArticle//Article//Language');
+        if ($langNodes) {
+            foreach ($langNodes as $n) {
+                $t = strtolower(trim($n->textContent));
+                if ($t !== '') $languages[] = $t;
+            }
+        }
+        $languages = array_values(array_unique($languages));
+
+        // 期刊出版国（MedlineJournalInfo/Country），非研究开展国，仅作兜底
+        $journalCountry = $this->xpText($xp, '//PubmedArticle//MedlineJournalInfo//Country');
+
+        // 作者单位原文，用于推断研究开展国
+        $affiliations = [];
+        $affNodes = $xp->query('//PubmedArticle//AuthorList//Author//AffiliationInfo//Affiliation');
+        if ($affNodes) {
+            foreach ($affNodes as $n) {
+                $t = trim($n->textContent);
+                if ($t !== '') $affiliations[] = $t;
+            }
+        }
+        $affiliations = array_values(array_unique($affiliations));
+
         if ($title === '' && $abstract === '') {
             return null;
         }
@@ -267,6 +292,10 @@ class PubmedService
             'journal_iso_abbr' => $journalIsoAbbr,
             'journal_medline_ta' => $journalMedlineTa,
             'year' => $year,
+            'language' => isset($languages[0]) ? $languages[0] : '',
+            'languages' => $languages,
+            'journal_country' => $journalCountry,
+            'affiliations' => $affiliations,
         ];
     }