用不着，无论使用正式的或非正式的设备你都可以做可用性测试。
No. You can do usability testing in either a formal or informal setting.
使用Web 2.0群众外包(CrowdSourcing)模型以极大的降低可用性测试的价格。
USES the Web 2.0 crowdsourcing model to dramatically drop the price of usability testing.
本节将迅速查看一下选择数据进行测试的5种不同方式：基于风险、基于需求、基于可用性、使用生产数据，或者随机使用产生的数据。
This section will quickly examine five different ways to select data for testing: based on risk, based on requirements, based on availability, using production data, or using randomly generated data.
使用扩展函数，用xsl：choose测试保证函数的可用性。
Use of an extension function, guarded by XSL: choose testing for availability of the function.
使用下述任何一种设置，你都可以进行有效的可用性测试。
You can do effective usability testing in any of these Settings.
在Mozella实验室，我们常使用的一个启发式设计方法叫做“通过电话测试来改进可用性”，尤其是当我们开始以创建更可视化的浏览器为工作目标时，这种方法体现的价值更大。
One of the design heuristics we use at Mozilla Labs, especially as we work to create a more invisible browser, is the “Over-the-Phone test”.
标准可用性测试(Standard usabilitytest)。将图标和整个用户界面一起展示给用户，要求用户使用系统完成一系列预先设定的任务，并在完成任务的时候进行出声思维。
Standard usability test in which the ICONS were shown to users as part of the full user interface and where the users were asked to "think aloud" as they used the system to perform set tasks.
不要使用诸如“可用性测试”或者“市场调查”这样的术语，因为这些会干扰参与者并使他们紧张。
Do not use terms such as usability testing or market research, as these can confuse and put people on edge.
当您使用此环境和测试设置运行测试时，为运行选择的测试控制器会确定所需代理的可用性。
When you run your tests using this environment with your test Settings, the test controller that is selected for the run determines the availability of the required agents.
一些可用性专家强调，对于任何系统高可用性，系统的部分应精心设计和使用它们之前全面测试。
Some availability experts emphasize that, for any system to be highly available, the parts of a system should be well-designed and thoroughly tested before they are used.
可用性测试跟完全没有干扰的现场观察不同，一般会在人为安排好的环境下，让使用者操作一系列任务，然后评估有效性（任务完成率）、效率（完成时间）、满意度（自我评估问卷）。
The extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency, and satisfaction in a specified context of use.
可用性测试跟完全没有干扰的现场观察不同，一般会在人为安排好的环境下，让使用者操作一系列任务，然后评估有效性（任务完成率）、效率（完成时间）、满意度（自我评估问卷）。
The extent to which a product can be used by specified users to achieve specified goals with effectiveness, efficiency, and satisfaction in a specified context of use.
应用推荐