At present, the train signal systems include the fixed block system and the moving block system.
目前列车信号控制系统中有固定闭塞系统和移动闭塞系统。
In a virtual storage system, a fixed-length block of contiguous virtual addresses copied as a unit from memory to disk and back during paging operations.
在虚拟存储系统中，一个固定长度的连续虚拟地址块，在分页操作过程中它作为一个单位在内存和磁盘之间来回复制。
The onset time of sensory block, the fixed time of block, the classes of anesthesia quality, the influence on circulatory system and the complications were observed.
观察两组的感觉阻滞起效时间、麻醉平面固定时间、麻醉质量评级、对循环的影响以及并发症发生的情况。
Pushing cylinder block is fixed on the track through cylinder, close to switching logic control system connecting PLC;
其中推块气缸通过气缸座焊接在积放轨道上，接近开关连接逻辑控制系 统PLC；
Pushing cylinder block is fixed on the track through cylinder, close to switching logic control system connecting PLC;
其中推块气缸通过气缸座焊接在积放轨道上，接近开关连接逻辑控制系 统PLC；
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