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What is a 4GL?

[摘要]

[发布日期] [发布机构]

[效力级别] [学科分类] 生物科学（综合）

[关键词] language;2GL;3GL;4GL;Eric Skjei;assembly;high-level programming;5GL;program computers;1GL;first-generation;machine [时效性]

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