用阿基米德螺线能成功地解决化圆为方的问题,方法很简单.A neat solution of the quadrature problem can be achieved with the spiral of Archimedes.现在的密封槽型比较常用的是对数螺线槽.Now the commonly used seal groove is a logarithm spiral groove.螺线齿轮被用于传送在平行的轴之间的行动.Hel...
磺胺药物对一些可怕的疾病,如猩红热和麻疯病,都有良好的疗效.Dreaded diseases like scarlet fever and leprosy responded to the sulfas.在中国,乳香被认为是用作治疗麻疯病.In China frankincense was thought to be a treatment for leprosy.麻疯病是一种影响皮肤和神经的疾病.Leprosy is a kind o...