说明：  OPNET的用户指南，翻译稿，主要跟据OPNET联机帮助进行翻译，主要翻译了Modeler进行编程的相关部分，希望对大家有用
(OPNET' s user guide, translations, mainly with OPNET, according to the online help for translation, the translation of the relevant part of the programming Modeler, we want to be useful)