由于面向对象技术和关系数据理论基于不同的理论基础，使得二者在协同工作时出现不匹配。
Object-Oriented technology and relation data theory are based on different theories, which make them mismatch in teamwork.
群体感知理论的研究与应用是计算机支持协同工作的重要研究内容之一。
In CSCW community, group awareness model and its application are an important research field.
协同学理论是研究复杂的开放系统内各子系统如何协同工作的理论。
Synergetic is a theory to study every subsystem in the complicated open system how to work in coordination.
结合单钥加密和双钥加密的理论，分别给出了纵向的等级安全管理密钥管理方法和横向的协同工作安全管理的工作组密钥管理方法。
With the application of symmetric cipher and asymmetric cipher, a cryptographic key management scheme for hierarchy is presented and a workgroup cryptographic key management scheme is presented.
而群体感知理论和实现技术是计算机支持的协同工作中必不可少的组成部分。
The theory of group awareness and the realization skill is an absolutely necessarily portion in CSCW.
而群体感知理论和实现技术是计算机支持的协同工作中必不可少的组成部分。
The theory of group awareness and the realization skill is an absolutely necessarily portion in CSCW.
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