On top of those sit integration and end-to-end system tests, which verify that the units work in concert.
在这之上是集成的、端到端的系统测试,它验证各单元是否可以协调工作。
The operating system and software that sit inside these devices is often as important as the traditional engineering decisions that go into their design.
通常,这些设备中的操作系统和软件与设计过程中传统的工程决策一样重要。
One is that publishers are at the mercy of an inefficient distribution system: piles of books may sit unsold at one bookseller while demand goes unmet at another.
一是出版商受效率低下的发行系统的影响严重:当一种图书在此书店脱销时,在彼书店却大量积压。
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