Then, in the Middle Ages, engineers discovered that such supports would last even longer if their downstream side was also shaped to offer little resistance to the current.
然后，在中世纪，工程师发现这些桥墩在下游这一侧如果也建成对水阻力比较小的形状，桥墩寿命还要延长。
Copper tubing shall not be used on the downstream side of the backflow preventer.
在防回流阀的下游不应该安装铜管。
Simultaneously, some rather instable rock masses were formed in some parts of the upstream and downstream side-walls of the main machine hall.
同时，在厂房上下游边墙的局部地段形成比较严重的不稳定岩体。
The main dynamic interference effect is the increasing effect, and when the shell is on the downstream side of the interfering building, the dynamic interference effect is bigger.
动力干扰主要表现在增大效应，当受扰建筑处于施扰建筑的下游时，动力干扰效应较大。
Results showed that the net heat loss on the downstream side of the jet nozzle could reach 20 ~ 30% of total heat flux. Therefore it can not be neglected in calculating the wall temperature.
结果表明，喷管下游端的壁面辐射损失高达壁面总热流的20 ~ 30%，在壁温计算时不容忽略。
A second roller is disposed in a downstream side of the printing area in the first direction, and is adapted to transport the printing medium in the first direction.
第二辊，其在所述第一方向上布置在所述打印区域的下游侧，并适于在所述第一方向上传输所述打印媒介；
A second roller is disposed in a downstream side of the printing area in the first direction, and is adapted to transport the printing medium in the first direction.
第二辊，其在所述第一方向上布置在所述打印区域的下游侧，并适于在所述第一方向上传输所述打印媒介；
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