他和朋友们在户内户外不同地方测试了很多次，每次信号都会变弱。
They tested it multiple times with multiple people, indoors, outdoors, in various locations (even shoes vs. no shoes) and it drops exactly the same every time.
分析了燃气表在户内的安装方式带来的抄表难、收费难和管理难的问题。
The difficulties in reading meter, charging and managing induced by indoor installation mode of gas meter are analyzed.
这些内核甚至可以是嵌套的，这样就允许一个客户内核在另外一个运行于主机内核的客户内核上运行。
These kernels can even be nested, allowing a guest kernel to run on another guest kernel that is running on the host kernel.
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