This thesis makes a deep research to data integration of digital library heterogeneous database by the method of the combination of XML technology and middleware technology.
本文选取XML技术与中间件技术相结合的方法，进行数字图书馆异构数据库的数据整合研究。
Its vaporization parameters are calculated with the method of digital integration based on volumes of tank, mass and composition of LPG, ambient temperature and other conditions.
采用数值积分法，根据储罐容积、液化石油气质量、组成、环境温度等条件计算其气化参数。
Its vaporization parameters are calculated with the method of digital integration based on volumes of tank, mass and composition of LPG, ambient temperature and other conditions.
采用数值积分法，根据储罐容积、液化石油气质量、组成、环境温度等条件计算其气化参数。
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