Firefox 4 will also include a number of updated developer tools like a timer API to test website performance and better memory diagnostic tools.

火狐4还将为开发者提供一些开发工具(比如有一个计时api可以测试网站性能)，以及更好的内存诊断工具。

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The memory-diagnostic unit causes the second processor to execute a memory-diagnostic program to diagnose the main memory, and identifies a defective area in the main memory.

存储器诊断单元使第二处理器执行存储器诊断程序来对主存储器进行诊断，并识别主存储器中的缺陷区。

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The computer apparatus further includes a memory-diagnostic unit, a diagnostic-program loading unit, and a defective-function identifying unit.

计算机设备还包括存储器诊断单元、诊断程序加载单元和缺陷功能识别单元。

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