Second, identify an important component in the unknown word-named entity. 识别未登录词中的重要组成&命名实体。
If the ber-tlv object received can't be understood but it contains simple-tlv whose identification is unknown, the provided minimal set conditions should be executed, the identified " essential comprehension " bit shall determine how the receiving entity acts. 若接收到标识不能理解但包含标识未知的simple-tlv成分的ber-tlv对象,则执行所提供的最小集条件,标识的“必需的理解”比特应确定接收实体如何动作。