修复预售商品上市期的bug

@@ -87,10 +87,10 @@ class DetailModel
                 }
             }
 
-            // 上市期
-            if (isset($baseInfo['expectArrivalTime'])) {
-                $result['periodOfMarket'] = date('n', $baseInfo['firstShelveTime']) . '月';
-            }
+	        // 上市期
+	        if (isset($baseInfo['expectArrivalTime']) && !empty($baseInfo['expectArrivalTime'])) {
+		        $result['periodOfMarket'] = date('n', $baseInfo['expectArrivalTime']) . '月';
+	        }
             
             // 促销信息
             if (isset($baseInfo['promotionBoList'])) {
@@ -245,7 +245,7 @@ class DetailModel
                 }
                 $result['goodsDescription'] = array(
                     'title' => '商品信息',
-                    'enTitle' =>  'PRODUCT INFO',
+                    'enTitle' =>  'DESCRIPTION',
                     'detail' => array(
                         'list' => array(
                             array('param' => '编号：' . $sizeInfo['productDescBo']['erpProductId']),
@@ -363,7 +363,7 @@ class DetailModel
                     $result['washTips']['list'][] = $value;
                 }
             }
-            
+
             // 详情配图
             if (isset($sizeInfo['productIntroBo']['productIntro'])) {
                 $productIntro = $sizeInfo['productIntroBo']['productIntro'];