英语翻译
The Shanghai Composite Index added 3.16,or 0.1 percent,to 3,438.37 at the close after trading lower for most of the day.The gauge has doubled from last year’s low as government stimulus spending,record bank lending and an economic rebound spurs demand for equities.The CSI 300 Index,measuring exchanges in Shanghai and Shenzhen,rose 0.3 percent to 3,755.82.
主要想知道“gauge”在这儿是什么意思.