1.
upward social mobility
社会地位的上向流动
2.
An upward current of air.
上升气流一股向上的气流
3.
The bird flapped up the stream.
那鸟鼓翼向河上流飞去。
4.
Sail up a river, ie against the current
向上游航行（逆流行驶）
5.
STUDY ON THE HYDRODYNAMIC PROPERTIES IN A COCURRENT THREE PHASE FLUIDIZED BED
气液并流向上三相流化床流体流动性质的研究
6.
a retractable fin keel used on sailboats to prevent drifting to leeward.
帆船上用于防止向下风向漂流的鳍板。
7.
In convection, hot currents flow upwards.
在对流中热气流向上运动.
8.
Ever coursing downward and ever renewed from above?
总是从上游流来又向下游流去么？
9.
Install the regulator with the arrow on the body pointing in the direction of the flow.
安装调节阀，使其阀体上的箭头指向流体流向。
10.
Can be installed vertically (flow up or flow down) or horizontally.
可以垂直（流向朝上或流向朝下）安装或水平安装。
11.
The salt water, being more dense, flows upstream under the fresh water which is flowing downstream.
淡水在上层向下流动，比重更大的盐水在下层逆流向上。
12.
Application of One-way Filter in the Loop of Fluid-flow Direction Changing
单向过滤在液流方向变化回路上的应用
13.
On a ring network, the direction opposite to that of data flow.
在环形网络上，与数据流方向相反的比特流。对照
14.
On Improvement Plan from Combined System to Separate System in Shanghai Hanyang Sewerage System
上海汉阳排水系统合流制向分流制改造方案
15.
Can you hear the water running down the hills?
你能听见泉水从山上向下流吗？
16.
Purpose: To test check valves for tightness in the direction of flow.
目的：检测止回阀在流向上的紧固性。
17.
The sap rises in trees in springtime.
春天树中的汁液向上流动.
18.
On the map we charted the course of the river.
我们在地图上标出了该河的流向。