To do fatigue reliability analysis for the cracked structures can give us some reference for the safety evaluation of such structures, so it has great practical significance. 对含裂纹结构进行疲劳可靠性分析,可以为此类结构的安全性评估提供参考,具有很大的现实意义。
The reduction of insoluble quinones to soluble hydroquinones and reoxidation in air to the quinone structure is the principle involved in dyeing cloth with"vat" dyes. 瓮染燃料对布料着色的原理在于不溶性醌类的还原和可溶性氢醌于空气中被再氧化至醌类结构。