In the paper, the point of enhancing enterprise's core competitiveness through expanding value chain extension, is still waited for further examination from the practice.
本论文中提出的通过扩大价值链外延来提高企业的核心竞争力的方法，仍然有待于实践的进一步检验。
The imperial civil examination system that had been in the Chinese history for 1300 years perhaps had its own reason to exist, rational element or rational core.
科举制度之所以在中国历史上存在1300年之久，定有其存在的理由，亦即合理成分或者合理内核。
The core observation, image logging and thin section examination show that the fractures could be classified into 4 types: micro-fractures, bevel fractures, high Angle fractures and map fractures.
据岩心观察、成像测井和薄片鉴定，将裂缝分为4种类型：微裂缝、斜交裂缝、高角度裂缝和网状裂缝。
The core observation, image logging and thin section examination show that the fractures could be classified into 4 types: micro-fractures, bevel fractures, high Angle fractures and map fractures.
据岩心观察、成像测井和薄片鉴定，将裂缝分为4种类型：微裂缝、斜交裂缝、高角度裂缝和网状裂缝。
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