例子图 9的序列图片段包括一个选择项约束；然而，约束不是一个必需的元件。
The example Figure 9 sequence diagram fragment includes a guard for the option; however, the guard is not a required element.
在滚动接触组成部分，作为一项规则，通过硬的快速淬火油或盐温泉浴的加热元件。
The rolling contact components are, as a rule, through-hardened by swiftly quenching the heated components in oil baths or salt baths.
控制项的设计工具元件在设计阶段会与其设计主应用程序在相同的信任层级内执行。
At design time, the designer component of a control runs with the same level of trust as its design host.
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