搜尋：grinding 在地質分類當中

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哺乳動物牙齒的基本構造

. This is the outermost part of the teeth and is used for chewing and grinding food The crown.....more

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for grinding up food. Some mammals (such as pigs and monkeys) have very well developed canines.....more

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cusps to expand the grinding surface, and omnivores rounded cusps of varying heights to help cut.....more

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. The way that elephants’ cheeks grow and erode away at an angle greatly increases the grinding.....more

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