Fieldbus can link field instruments, field instruments and equipments in control room into a network system and implement total digital, bi-direction and more variables communication.

现场总线使得现场仪表之间、现场仪表和控制室设备之间构成网络互联系统，实现全数字化、双向、多变量数字通信。

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Since the Link field cannot be edited from this tab, switch to the Source tab.

Link 字段不能通过此选项卡编辑，因此要切换到 Source 选项卡。

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Visitors can also find a link to the Fort Raleigh National Historic Site, with information about a free electronic field trip for students.

VOA: special.2009.08.17

There is also a live video link between Landstuhl and the combat field hospitals in Balad and Bagram, Afghanistan.

NPR: Combat Medicine: Fast-Tracking Troops to Germany

And of course, the science is not there to make a link between what's happening in this field and cancer, but you wonder.

NPR: Oil Expansion Plans In L.A. Rile Residents

The initial work is due to be completed by the end of January, with a new cycle link and footpath across King George V playing field added by the spring.

BBC: GCHQ plans upgrade to Benhall transport