美国历届总统就职演讲。适合英语学习的朋友和立志于提高演讲水平的朋友。-Successive U.S. presidential inauguration speech. Suitable for the learning of English friends and was determined to raise the level of speech friends.

Dichotomy Methods Successive dichotomy uses a totally different approach to the problem of indexing. The constants A to F in the equation Q = A h2 + B k2 + C l2 + D kl + E hl + F hk are assigned minimum and maximum values so that for a gi