There were 20 cracks at upstream face dam head of Huanren dam during construction which threatened dam safety.

桓仁大坝上游面施工期发现严重的劈头缝20条，威胁大坝安全。

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Suppressed by the up passage vortex at upstream side of blade, the intensity and scale of the tip clearance leakage vortex is decreased.

渐缩型间隙在叶片前半轴弦受到上通道涡的抑制，减少了叶顶间隙泄漏涡的强度和范围；

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There are many treatment method for seepage of concrete dam body. Blocking at upstream face and drainage at downstream face is one generally adopted.

混凝土坝体渗水处理目前方法很多，一般采用上堵下排的方法。

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First of all, it ignores the fact that the value chain is connected to the environment, that resources are being extracted at the upstream end and that consumers are dumping their used products back into the environment at the downstream end.

FORBES: Sustainable Consumption Rising on the Business Agenda

Adobe gets its revenues at the upstream end--from the programmers and graphic designers who create the content that plays on Flash players.

FORBES: Magazine Article

The firms at the upstream end of those pipelines, such as Russia's Gazprom, which supplies a quarter of all western Europe's gas, thus have a strong hand in negotiations.

ECONOMIST: Shale gas should make the world a cleaner, safer place