This digitalized optical fiber transmission system is upstream line of the bi-directional optical fiber transmission system.
数字化光纤传输系统，为有线制导光纤传输系统的一个部分；
By 1700 the Virginia frontier had been pushed as far west as the fall line-the point upstream at which the rivers emptying into the Atlantic became unnavigable.
到了1700年，弗吉尼亚州的边境已经向西远推到了瀑布线——上游河流倾泻于大西洋从而不能通航的点。
Control supply line water pressure. install a soft seated spring loaded check valve upstream of the assembly.
控制供应管道的水压。在总成的上游安装一个软阀座，弹簧负载止回阀。
Revetments protect the space from dam crest to the line a certain distance, normally 2.5m, under the minimum water level of the dam upstream.
护坡覆盖的范围，上游由坝顶护至水库最低水位以下一定距离，一般在最低水位以下2.5米。
Super DDOS attacks, the following line bandwidth consumption the others upstream bandwidth, home computers can be easily knocked down the server!
说明：超强ddos攻击器，以下行带宽消耗别人的上行带宽，家庭电脑都可轻易击倒服务器！
Butterfly or similar type valves should be installed in the line upstream and downstream of the automatic control valve to allow for maintenance service.
在自动控制阀的上游和下游应该安装蝶阀或类似的阀门，以便于进行维护维修。
Helical line (port) is in upstream of tangential port, minimizes the deterioration came from outflow of helical line, and obtains the best support of tangential port airflow.
螺旋线(气道)位于切向气道的上游，以使来自螺旋线外流的恶化减至最小，并获得切向气道气流的最佳支持。
To forecast the electromagnetic environment of HVDC transmission line, based on upstream finite element method (FEM) a corresponding analysis and forecasting software is developed.
为预测高压直流输电线路的电磁环境问题，基于上流有限元法开发了相应的分析预测软件。
They may be installed either upstream or downstream of a regulator or meter, and may be controlled directly or from a remote pressure source by means of an external control line.
它们可安装于减压阀或计量表上下游，并可直接控制或以外接远端压力源控制线做远端控制。
The phreatic line is higher at upstream-type tailings dam and most of dams are in saturated state, thus easily leading to flow slide destruction under earthquake.
上游法尾矿坝浸润线较高，大部分坝体处于饱和状态，地震作用下易发生液化流滑破坏。
The phreatic line is higher at upstream-type tailings dam and most of dams are in saturated state, thus easily leading to flow slide destruction under earthquake.
上游法尾矿坝浸润线较高，大部分坝体处于饱和状态，地震作用下易发生液化流滑破坏。
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