The envelope descriptor describes all metadata for the virtual machine (s) (including virtual hardware) that make up this OVF package.
信封描述符描述构成此ovf包的所有虚拟机元数据(包括虚拟硬件)。
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These hardware devices are similar in nature to network devices like routers and switches in that they combine hardware and software in a turnkey package.
The video below shows that this prototype solution is a neat combination of hardware and software - all of the daily equipment that Type 1 diabetes patients use is wrapped up into one package.