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此软件的全称为“SIMATIC STEP 7 V5.4 incl SP3.1 Chinese", 是在完整的 V5.4标准版的基础上包含了中文版，如果切换到英文环境应该是和标准的英文版SP3.1完全一样！
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该软件不包含软件授权，若学习需要授权，可以留下邮箱。
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