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。
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。
The direct measurement of total temperature of high-enthalpy flow was achieved through special shielded structure especially at disturbance environment of super electromagnetic field.
特别是，在电弧加热设备的强电磁场干扰环境中，采用特殊的屏蔽结构实现了这种强干扰环境下高焓气流的总温直接测量。
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