Black Gmbryo Element Tonic Liquid 羊胎素
black control element 黑体控制元件
non-black control element 非黑体控制元件
Electric element black box 电学件黑箱
Since each element in a level of decomposition is considered from the black box perspective only, the only interactions shown are those between them and the systems actors.
由于一个分解级别中的每一个元素都是从黑盒的角度被考虑的，所以显示出来的只是它们同系统参与者之间的交互作用。
Clicking one of the black arrows shows you the contents of the element, thus allowing you to browse your entire workspace from the bar.
单击一个黑色箭头将为您显示元素的内容，从而允许您通过面包屑栏浏览整个工作空间。
It's useful to note that black and white box attributes are not inherent characteristics of an element.
黑盒和白盒属性并不是一个元素的内在特性，注意到这一点非常有用。
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