async什么意思？

async的音标：async的英式发音音标为：[ə'zɪŋk]async的美式发音音标为：[ə'zɪŋk]...

The async result object is null or of an unexpected type.异步结果对象为空或属于意外类型.Channel sink does not exist. Failed to dispatch async call.信道接收不存在. 未能调度异步调用.Operation cannot be performed while async operation is pending.不能在异步操作...