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芳香是一种无形的美,它的出现、存在远较人类为早,又是人类最早的化妆品之一。当人们还过着茹毛饮血的生活时,花朵便作为重要的化妆品,用来美化环境和人们自身。而留给人们更长远记忆的,则不仅是花朵的颜色和造型,而是它迷人的芳香。和所有的气味一样,花香也是由许多种挥发性分子作用形成的。它们刺激着人们鼻孔上部的嗅觉细胞,再通过嗅神经细胞传入大脑产生嗅觉。由于花的香分子数量比较多,又是连续不断地散发,所以常是淡而不薄,长时间停留在一定空间。由于空气中分子的对流,有花香的地方他它污染空气的分
Aromatic is an intangible beauty, its appearance, existence far earlier than humans, but also one of the earliest human cosmetics. When people also live the life of the rough hair, flowers as an important cosmetics, used to beautify the environment and people themselves. And leave people more long-term memory, it is not only the color and shape of flowers, but its charming aroma. Like all odors, flowers are also formed by the action of many volatile molecules. They stimulate the olfactory cells in the upper part of the nostrils and transmit them to the brain through the olfactory nerve cells for their sense of smell. As the number of fragrant flowers more, but also continuously distributed, it is often thin but not thin, long stay in a certain space. Due to the convection of molecules in the air, it pollutes the air in places where there are flowers