... std；标准 std model；标准模型 std pipe thread；标准管螺纹 ...
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std model
标准模型
以上为机器翻译结果，长、整句建议使用 人工翻译 。
A screen flow STD can be thought of as capturing the lifecycle of a typical "session" of the actor that owns the state in the business process model.
可以将屏幕流std看作是捕获在业务流程模型中拥有状态的Actor的典型“会话”的生命周期。
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There's even a model that meets MIL-STD-461F standards for electromagnetic protection -- useful if your day job involves battling superheroes.
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