释义 |
buys bal·lot's law \ˈbīsbəˈläts-, ˈbȯis-\ noun Usage: usually capitalized both Bs Etymology: after C.H.D. Buys Ballot died 1890 Dutch meteorologist : a law in meteorology: when the observer has his back to the wind the lower barometric pressure is to his left in the northern hemisphere and to his right in the southern hemisphere owing to rotation of the earth |