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Pronunciation varies by accent · noun
(US) A board placed temporarily upon a dam, river, stream, etc. (typically within a permanent frame) to raise the water above its usual level..
A form of cheap open weir which has been commonly constructed in the West is the open wooden frame and flashboard weir.
The railing at the upstream side also serves as a guide and a support for the manually operated hoist for the flashboard placement and removal.
Although flashboards are designed to fail when reservoir level rises rapidly to an elevation greater than the flashboards, NPI states that most flashboard failures occur as a result of debris or ice hitting the '''flashboards.
The discharge pipe for the flashboard riser structure is sized as a culvert ( i.e., boards are out and ditch is flowing full), although the weir is normally sized as though boards are in place.
There exists a trapezoidal groove in the bottom of each container and a flashboard fixed in feeding system which match the groove.
[…] a flashboard is installed on the outer side of the rear wall to adjust and open-close the seed discharge hole, with the flashboard fastened with a wedge.
The plasma produced by the flashboard was mostly C⁺ and C⁺⁺.
A polyethylene sheet (flashboard) is attached on the anode (aluminum), which acts as the ion source.
Use flashboard when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Flashboard means (US) A board placed temporarily upon a dam, river, stream, etc. (typically within a permanent frame) to raise the water above its usual level..
The closest synonym depends on the sentence and intended sense.
The opposite depends on the specific sense.
A form of cheap open weir which has been commonly constructed in the West is the open wooden frame and flashboard weir.
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