If an activity session is not present, the component will execute in the context of the existing unit of work scope or a local transaction.

如果不存在活动会话，则组件会在现有的工作范围单元或本地事务的上下文中执行。

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A superficial way of creating a new kind of unit is to copy an existing unit and give it a caption that suggests that it is a different type of unit.

创建新类型单元的一种方式是复制一个已存在的单元，并给其起一个能够表面不同类型单元的标题。

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Automated web application testing from the browser perspective can be a great way to augment existing unit tests that cover other parts of your application.

从浏览器的角度看，自动化的web应用程序测试可能是扩大覆盖您的应用程序其他部分的现有单元测试的一种极好方法。

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The new technology platform can be embedded in an existing design or operate as a stand-alone unit, with options to compute the location locally or transmit the information to a remote system which can process the data before visualising it on a smartphone app.

ENGADGET: Cambridge Consultants develops indoor tech to pick up where GPS drops off

The new 16-ward, 234-bed unit will be constructed within the hospital's existing grounds and will house patients from the end of 2017, the trust said.

BBC: Broadmoor

The new 16 ward, 234-bed unit will be constructed within the hospital's existing grounds and will open to patients at the beginning of 2017, the trust said.

BBC: Pipistrelle bat