The three gorges blocks are a double system, one for upstream traffic, and the other for downstream.

三峡船闸是双线系统，一条上行，一天下行。

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This protocol not only allocates upstream bandwidth dynamically, but also has the consistency of traffic management, high bandwidth efficiency and low cell delay.

本方案不仅能够灵活动态地分配用户上行接入的带宽，还具有统一的业务流管理、高带宽利用率和低信元时延等优点。

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The reason why GP issue the GLB is to provide a considerable service to the upstream customers and bring stable traffic and cash flow to its own entertainment venues.

此次推出GLB就是为了充分服务上游高端客户，并为旗下的娱乐机构导入稳定的客流、金流。

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Uzbekistan has also unilaterally closed most border checkpoints with both upstream countries, set mines along parts of the boundary with Tajikistan, and often holds up commercial traffic.

ECONOMIST: Spats over control of water roil an already unstable region