Information services provide a virtual enterprise information environment in which the users of information are shielded from the complexities of the underlying information systems and repositories.
信息服务提供了一个虚拟企业信息环境，其中对信息用户隐藏了基础信息系统和存储库的复杂性。
2
RS-485 communication cable in general occasion using twisted pair can be, but under the high requirement of environment can be using tape shielded twisted pair cables.
485通讯电缆在一般场合采用双绞线就可以，但在要求比较高的环境下可以采用带屏蔽层的双绞电缆。
3
The direct measurement of total temperature of high-enthalpy flow was achieved through special shielded structure especially at disturbance environment of super electromagnetic field.