图表专家 ： 使用图表和图形，解释历史数据，以便能找到趋势，预测未来走势，并协助技术分析的人。 也可称为技术交易员。
领域专家可以用他们喜欢的任何业务领域语言表述概念和规则，这些领域语言可用文本、图表、符号、表格等方式进行描述。
The domain experts can express concepts and rules using any customary notation they prefer - their business domain language - which can be projected using text, graphics, symbols, tables etc.
Bill还提到用户体验不像具体的事物那用容易展现，更多的是对时间的掌握，专家通常会使用状态或转换图表来描述用户体验，这也是用户体验中最重要的元素。
User Experience professionals often use state/transistion diagrams to describe the user experience. Bill believes that transitions are the most important element in the UX.
今年年初，当图表显示正在建设信息高速公路设施的四家地区性电话公司只接通了富人社区时，一些专家对此不无担忧。
Some experts were alarmed earlier this year when diagrams showed that four regional phone companies who are building components of the superhighway were only connecting wealthy communities.
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