球形的

The purpose was suggested that guarana plant composition can be used to develope and study the sports new nutrition supplement in the future. It could help athletes to enhance performance in the field.

合上述，本篇目的为利用瓜拿那天然植物成分，增加未来瓜拿那运动营养新产品的开发与研究，帮助选手们可以在自我的领域上有更突破性的表现。

The most widely used machine tool is the engine lathe, which provides a principle axis rotary primary motion to while the appropriate feed motions are imparted to the tool.

最用途广泛的机械工具是引擎车床，提供一个原则轴转台式主运动，当适当的合闸动作被给予到工具时。