fixed intervals短语⁸⁴³²⁰⁺⁸ 基本例句 固定间隔 It is usually performed at fixed intervals of time, perhaps quarterly, semiannually, or annually. 通常每隔一段时间进行一次，可能是一季度，也可能是半年或一年。 enook Describes how to run procedures on separate threads at fixed intervals. 描述如何使用系统管理的辅助线程池。 microsoft