Porter’s book also identifies the importance of examining where the strategic business unit fits within its industry. Porter uses the tern value system to describe the larger stream of activities into which a particular business unit’s value chain is embedded.的翻译：正在翻译，请等待... 什么意思？中文翻译英文，英文翻译中文，怎么说？

波特的书，还确定了适合其行业内的战略业务单元的研究的重要性。波特使用的燕鸥的价值体系来形容更大的流嵌入到一个特定的业务单位的价值链活动。