Concrete expansion function is to produce a certain volume expansion after concrete hardening of concrete to eliminate concrete early hardening volume contraction.
混凝土膨胀剂的功能是使硬化后的混凝土产生一定的体积膨胀，抵销混凝土硬化早期产生的体积收缩。
Through the example of Tongji Information Retrieval Network System (TJIRNS), the paper mainly describes on-line expansion function and its implementation under the specific conditions.
文中以同济情报检索网络系统（TJIRNS）为例，论述了典型环境中联机扩展功能及其实现过程。
E. platform based embedded CNC system, unlimited upgrade expansion function. The anti interference design of hardware and software synchronization to ensure the reliable operation of the system time.
基于平台的嵌入式数控系统，无限升级扩展功能。软硬件同步的抗干扰设计，确保系统时间可靠运行。
E. platform based embedded CNC system, unlimited upgrade expansion function. The anti interference design of hardware and software synchronization to ensure the reliable operation of the system time.
基于平台的嵌入式数控系统，无限升级扩展功能。软硬件同步的抗干扰设计，确保系统时间可靠运行。
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