子网掩码主要用于确定IP地址中的网络号和主机号以及将一个大的IP网络划分为若干个小的子网络。
Subnet mask is mainly used to define the network number, host number of IP address and divide one heavy IP network into several subnets.
子网掩码由四个字节组成，它的值为255时表示IP地址中网络地址的部分，值为0时则识别IP地址中表示主机号的部分。
The subnet mask is an octet that USES the number 255 to represent the network address portion of the IP address and a zero to identify the host portion of the address.
在实际环境中，还需要使用其他一些路由信息将特定序列号关联到不同的主机。
In a real environment, additional routing information would be required to associate specific serial Numbers with different hosts.
主机ID可以是磁盘序列号或者mac地址。
更典型的解决方案是显示用户名、主机名、目录，以及美元符号或井号(具体取决于当前用户的UID)。
A more typical solution is to display the username, hostname, directory, and the dollar or hash sign, depending on the UID of the current user.
卖方对各包装箱及捆内的各散装部件，须系加标签，注明合同号、主机名称、部件名称和该部件在装配图上的位号。
Loose accessories packed in cases and in bales will be labeled by the Seller indicating contract number, name of main machine, name of accessories and its part number on the assembly drawing.
这个32位IP地址有两个部分：一个部分标识网络(网络号)和另一部分标识网络中的特定机器或主机(主机数量)。
This 32-bit IP address has two parts: one part identifies the network (with the network number) and the other part identifies the specific machine or host within the network (with the host number).
子进程的进程号（PID）将成为这个散列的关键字，而其键值就是该子进程正在处理的相对应的主机地址。
The keys of this hash will be the child process ID (PID), and the value will be the corresponding host that the child is processing.
子进程的进程号（PID）将成为这个散列的关键字，而其键值就是该子进程正在处理的相对应的主机地址。
The keys of this hash will be the child process ID (PID), and the value will be the corresponding host that the child is processing.
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