[countable] (also ˈbeta, informal ) the second or final test of a product, especially a new piece of computer software, by a few customers before the final version is sold to or used by the public贝塔测试（尤指软件发售或公开使用前由少数客户所做的最后测试）◆Beta tests are scheduled to start in October.贝塔测试定于十月开始。  ➡  alpha test