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an attenuation factor.
in the pipes, for which we propose
into account friction
of
times the cross-sectional area
out of the sprinkler is the speed
The volume
sprinkler times the attenuation factor:
the
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够用就行,呵呵,是呀……
很不错,以后我也要抓紧机会~~:)
呵呵
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晚了晚了,还奖励不?
灌水真不容易呀