Through comparing several others, this paper introduces a method to develop controlling program with multitask by using repeating query technology.
通过比较各种方法，提出了采用轮循技术开发支持多任务的控制程序的方法。
Through comparing several others, this paper introduces a method to develop controlling program with multitask by using repeating query technology.
通过比较各种方法，提出了采用轮循技术开发支持多任务的控制程序的方法。
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