Many bronze valves offer a Y-pattern body with an angle seat forimproved performance.

许多青铜阀门为了改进性能，采用角式阀座的Y形阀体。

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Her seat slides forward and back on tracks in the center of the cockpit, which increases the OARS 'Angle of attack as they enter the water — making each stroke longer and more efficient.

她的座椅下面有个轨道，因此座椅可以前后滑动，这样在桨入水时可以增大它们的迎角，使每一次划船时桨在水中停留的时间更长，从而更有效率。

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Disc has a differential Angle front the seat to provide a line contact for maximum sealing.

这类阀瓣具有不同的角度面对阀座，因此具有线接触作用，从而实现最大限度的密封。

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To compensate, some manufacturers will even slightly alter the geometry of a commuter cycle, perhaps tilting the seat post at a different angle, but that could potentially lead to shorter riders being forced into a more hunched or horizontal position.

ENGADGET: Engineering a better bicycle with DBC City Bike Design Alt

Ditto for Sharron Angle in her quest for a Nevada Senate seat, and Arkansas Sen.

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