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1纳米等于十亿分之一米,20纳米相当于一根头发丝的3千分之一。纳米可谓长度单位家族中最小的一员。纳米技术走进了我的家,纳米技术改变了我的生活!住家是我的港湾,是我栖息的地方。房屋的好坏关系到家庭成员的身心健康。而我家住得是绝对OK!因为有纳米技术在。要说我家的纳米材
One nanometer is equal to one billionth of a meter, and 20 nanometers is equivalent to one-thousandth of a hair. Nano is the smallest member of the family of length units. Nanotechnology has entered my home, and nanotechnology has changed my life! The home is my harbor and my home. The quality of housing is related to the physical and mental health of family members. And my home is absolutely OK! Because of nanotechnology. To say my family’s nanomaterials