covers declaring and manipulating variables that contain a sequence of characters 介紹如何聲明和操作包含字符序列的變量。
the previous articles in this series also showed some simple python examples that manipulated variables that held data of these four types 該系列的前4篇文章也展示了一些簡單的python例子,這些例子管理保存有這四種類型的數(shù)據(jù)的變量。
in automation control system, the actuator receives signals from controller or the manual operation, transfers them to the servomechanism's output . in that way, actuator adjusts the manipulated variable 在自動控制系統(tǒng)中,執(zhí)行器接收來自控制器的自動調(diào)節(jié)信號或手動操作信號,將其轉(zhuǎn)換成調(diào)節(jié)機(jī)構(gòu)動作的輸出,從而改變控制量的大小。