The study and design results are significative of engineering design.
该研究及设计结果对工程设计有参考价值。
Characters of symmetry groups is a powerful maths instrument, it is very significative to study and bring forward its simple computation method.
对称群特征标是有力的数学工具，研究并提出其简单计算方法是很有意义的。
The research is significative and instructive in some extent to prevent and control acid rain pollution of Hunan province.
本文的研究对于湖南省城市大气污染和酸雨污染的控制方向具有一定的参考意义。
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