关于信用证的法律性质在理论和实践上存在很大争议。
Legal nature of documentary credit is disputable in practice and theories.
因此，速度和强度的研究在理论和实践上都具有重要意义。
Therefore, the research of the speed and strength has important meanings in theory and practice.
定理机器证明的研究，在理论和实践上都具有重要的意义。
The research in mechanical theorem proving has great significance in the theory and the practice.
因此，它的分析和研究，无论在理论和实践上都有一定的哲学意义。
Therefore, its analysis and research, both in theory and practice have certain philosophical significance.
这个主意在理论上和实践上都站不住脚。
在理论意义和实践意义上，本文都具有一定的价值。
Both in the theoretical and practical sense, this thesis has a certain value.
在理论意义和实践意义上，本文都具有一定的价值。
Both in the theoretical and practical sense, this thesis has a certain value.
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