We wonder if that’s how JBL feels sometimes. In case you hadn’t noticed, the American brand has been king of the Bluetooth speaker hill in recent years and is in danger of monopolising the market, ...

Find out more about how we test, analyze, and rate. The JBL Endurance Race 2 aim to offer the features of the best workout headphones at a more affordable price, and for the most part they succeed.

1 青海光热发电出力特性 选取乌图、冷湖和德令哈3个地区，以100MW塔式熔盐光热为例。根据统计，乌图、冷湖、德令哈地区光热电站年利用小时数分别为2350h、2518h、2269h。海西地区光热电站典型年内各月发电量分布见图1。可以看出，乌图、冷湖、德令哈地区光热 ...