[数学英汉词典] normal plane

[英汉数学大词典] normal plane

[机械英汉词典] normal plane

[机械工程英汉词典] normal plane

[英汉机械工程大词典] normal plane

[海运英汉词典] normal plane

[航海英汉词典] normal plane

[计算机英汉词典] normal plane

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