upper stream

基本解释

The pollutants are mainly from point pollution source of upper stream of Zhuozhang river.
污染源主要来自于河段上游点源污染。
An inline mixing device (53) is constituted of a sulzer mixer (160) disposed in an upper stream and a static mixer (170) disposed in a downstream.
直列式混合装置（53）由设置在上游的萨尔泽式混合器（160）和设置在下游的静态混合器（170）构成。
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A quantitative evaluation of beneficial result in conserving water and protecting soil erosion of froest in the upper stream of Miyun reservoir is produced from the information system.
利用该系统对密云水库上游密云县境内水源保护林的水源涵养与防止土壤侵蚀效益进行了定量评价。

The planet and its neighbours are bathed in the solar wind, a stream of charged particles ejected from the upper atmosphere of the sun.
ECONOMIST: Climate change: Bubbling up The
In fact, there's no known upper limit since the human eye sees a continuous stream of movement, not individual frames. 60 fps was tried in the 70's by Douglas Trumbull with his 70mm film process called Showscan (see the More Coverage link below for its comeback tour), but studios and theaters of the era couldn't stomach the cost of the celluloid it required and the company went bust.
ENGADGET: Editorial: Despite shaky 48 fps Hobbit preview, high frame rates will take off