存储访问时间

As a result of the lack of memory access uniformity and atomicity, different processors may observe different values of the accessed variable.

访存时间的不一致和存储访问的可分割性使得在同一时刻，同一存储单元对不同的处理机显示出不同的值，从而影响系统的正确性。

Address and access the requested memory location,the microprocessor asserts aREAD control signal,The READ signal is a signal on the control bus which the

当微处理器为存储器留出充足的时间来对地址译码和访问所需的存储单元之后，微处理器发出一个读控制信号。

This method enables every object-based storage device only accessed no more than once and guarantees the invariableness of response time on a certain extension of query windows.

该策略保证查询窗口在一定范围内每台基于对象存储设备最多只被访问一次，且响应时间恒定。

It must be stored for all the time you are directly accessing the storage.

它必须被存储为所有的时间您直接访问存储。

Secondly, using the model of the EMI, the optimizing the performance of the EMI of the Garfield is researched. Aim at the ARM7TDMI of the Garfield without the CACHE, using the burst transfer of the SDRAM, some caches are added in the Emirs the data or instruction can be perfected to the caches.

然后在外部存储控制器模型的基础上，对其架构进行优化，针对GARFIELD系列芯片使用的ARM7TDMI内核没有缓存的特点，利用SDRAM的突发传输特性，在外部存储控制器中加入CACHE，将数据或指令预取到CACHE中，减少对SDRAM访问的等待时间，从而提高系统性能。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。