当今大多数产品（电话、相机、立体声、汽车、飞机、医疗设备等）包含不断增多的软件并由软件系统进行设计和制造。
Most products today (telephones, cameras, stereos, automobiles, aircraft, medical devices, etc.) contain increasing amounts of software and are designed and manufactured using software systems.
在几分钟的沿着格栅的当当声后，我们到达了机器的尾部，工作人员正在给机器添加新的设备系统。
After clattering along the grating for several minutes, we reach the back of the machine. The pipe crew is busy adding new plumbing.
设计一个虚拟现实系统除了必须具备相关的硬件设备外，关键的问题是如何构建一个逼真的虚拟环境，这个环境包括三维的虚拟场景、立体声等等。
For designing a virtual reality system, the crucial problem is how to create realistic environment, which contains 3d virtual scene, stereo and so on, besides related hardware equipment.
设计一个虚拟现实系统除了必须具备相关的硬件设备外，关键的问题是如何构建一个逼真的虚拟环境，这个环境包括三维的虚拟场景、立体声等等。
For designing a virtual reality system, the crucial problem is how to create realistic environment, which contains 3d virtual scene, stereo and so on, besides related hardware equipment.
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