在各种自然能源中,人类最早利用的是风力和水力。我国最早创造的一种水力机械叫“水碓”,最初是利用立式水轮牵引轮轴以舂米,以后,立式与卧式水输并用,并逐步发展为同时能担负碾米、磨面、筛面等多种工作,而且留传至今。 Among all kinds of natural energy, the earliest use of human beings is wind power and water power. One of the earliest hydraulic machinery we created in China was called “Minamata”. Originally it used the vertical water wheel to propel the wheel shaft at a distance of 舂m. Later, the vertical and horizontal water were transported to and used together, and gradually developed into a water- Noodles and other work, but also left behind so far.