| 摘要 |
An apparatus (100,131) for shaping fluid flow comprises a body (102,302) having upstream and downstream ends (104,106,304,306) and formed with a characterizing channel (108,308). The characterizing channel has a first cross-section (110,310) adjacent the upstream end (104,304) that gradually changes to a second cross-section (112,312) adjacent the downstream end (106,306) that is different in configuration from the first cross-section. <IMAGE>
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