在分析球磨机、分级机系统模型基础上，论文给出了磨矿分级过程的控制依据，并将整个磨矿系统分解为若干控制子系统。
The control method of grinding grade process is designed and the whole grinding system is treated as several control subsystems by analyzing of the model of mill and grader.
对于既负责大型机、又负责小型系统的人而言，由于这两种系统在编程或维护模型方面缺乏共同点，因此这种可移植性就显得格外重要。
This is especially important for those with responsibilities that range over mainframes and smaller systems, which share so little else in their programming or maintenance models.
OTP系统通常采用客户机-服务器模型，在给定的时刻对于给定的用户，在客户端生成相同的一次性密码。
OTP systems are typically built on a client-server model, where at a given time, for a given user, the same one-time passwords are generated on the client side.
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