Up to 3m people throng its narrow alleys every day, many of them balancing flat-screen televisions on their heads as if they were buckets filled with water at the village well.
每天有大约三百万人在城市拥挤的街道中川流不息，许多人就像注满水的桶一样，头顶着一部平板电视机。
It is deemed that choice of well screen 's diameter and length of a water well according to the inflow velocity to the well as did by some professional agencies traditionally is not reasonable.
本文根据实践与测试认为，供水管井过滤器直径、长度的确定，按“入井流速”计算不合理。
According to the difficulties of water well repairing and gravel-filling for horizontal well, porcelain granule pre-coated well screen was developed based on a lot of laboratory tests.
针对水井修井和水平井成井填砾困难的特点，通过大量室内试验，研制了陶粒贴砾过滤器。
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