这样规定的原因实际上与观念无关，而是来自 XML 设计的实践和对两种方式的效果的观察。
The reasons for this prescription are actually a bit philosophical, but they come from experience in XML design, and observing the effects of both cases.
这些电动车组是按欧洲铁路通用性规定设计的目前世界上最现代的高速列组。
They currently represent the most modern high speed trains in the world and are designed in strict compliance with the regulations now governing European interoperability.
在此基础上，提出了加固设计方案，保证了边坡在规定期间的稳定。
Based on this, a reinforcement design scheme is proposed to keep slope stable in given period.
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