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词汇 Guttie
分类 英语词汇 英语翻译词典
释义

Guttie

原声例句
经济学人（汇总）

Gutties were better than the leather-wrapped, feather-stuffed balls they replaced, which often exploded in mid-air.

胶质球以更优异的性能一度替代了用羽毛填充在皮囊里的（这类球飞到空中常常会爆炸）羽毛制高尔夫球。

英语百科

Golf ball

（重定向自Guttie）
A golf ball beside a hole
Featherie golf balls
Drag coefficient Cd for a sphere as a function of Reynolds number Re, as obtained from laboratory experiments. The solid line is for a sphere with a smooth surface, while the dashed line is for the case of a rough surface (e.g. with small dimples). There is a range of fluid velocities where a rough-surfaced golf ball experiences less drag than a smooth ball. The numbers along the line indicate several flow regimes and associated changes in the drag coefficient: •2: attached flow (Stokes flow) and steady separated flow, •3: separated unsteady flow, having a laminar flow boundary layer upstream of the separation, and producing a vortex street, •4: separated unsteady flow with a laminar boundary layer at the upstream side, before flow separation, with downstream of the sphere a chaotic turbulent wake, •5: post-critical separated flow, with a turbulent boundary layer.

A golf ball is a special ball designed to be used in the game of golf.

Under the rules of golf, a golf ball has a mass no more than 1.620 oz (45.93 grams), has a diameter not less than 1.680 in (42.67 mm), and performs within specified velocity, distance, and symmetry limits. Like golf clubs, golf balls are subject to testing and approval by the R&A (formerly part of the Royal and Ancient Golf Club of St Andrews) and the United States Golf Association, and those that do not conform with regulations may not be used in competitions (Rule 5–1).
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