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。

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But it's not just the professional schools that continue to see increased demand.

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But now it's really turned into this phase where it's about treating the surfers as professional athletes and not just party animals.

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It's not an issue among professional musicians, he says, and men occupy first flute roles in leading orchestras like the New York Philharmonic.

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