第二部分从理论上讨论了动力大地测量网络数据库系统的基础知识和数据模型，研究了网络数据库系统的特点、工作模式以及主要技术。
The second part discussed the theoretical knowledge and data models of DGNDBS; studied the feature, work model and main technique of the network database system.
该设备包括用于测量肌肉活动性和用于提供指示该肌肉活动性的第二数据的装置(12、15 - 19)。
The apparatus includes means (12, 15-19) for measuring muscle activity and for providing second data indicative of the muscle activity.
第二组测量数据与第一组高度相关。
The second group of measurements had a high correlation with the first.
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