详细解释:a. 不同时的, 不同期的, 异步的
【计】 异步的
【医】 不同时的, 异步的
英语解释：
形容词 asynchronous:
(digital communication) pertaining to a transmission technique that does not require a common clock between the communicating devices; timing signals are derived from special characters in the data stream itselfnot synchronous; not occurring or existing at the same time or having the same period or phase