In comparison of English and Chinese, their study of parallel structure is feeble and difficult.
在英汉语对比研究中，并列结构的研究既是个薄弱环节，又是个难点。
The joint design points is an important concept in reliability analysis of parallel structure systems.
联合验算点是并联结构体系可靠度分析中的一个重要概念。
The joint design points is an important concept in reliability analysis of parallel structure systems.
联合验算点是并联结构体系可靠度分析中的一个重要概念。
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