dot_products = []
Maxell’s naming system remained fairly standard throughout the 80s, with a 1983 lineup including one of the first references to “DD” disks as “Double sided / Double density / Double track” (three Ds by my count, but what do I know). And a New York Times holiday gift guide from the same month as the fortune teller ad claimed “a box of 10 premium 3.5-inch diskettes costs $20 to $25 at most stores; the high-density versions cost $55 to $60.”
，推荐阅读新收录的资料获取更多信息
def generate_random_vectors(num_vectors:int)- np.array:，更多细节参见新收录的资料
(define next (delay (infinite-integers (+ n 1))))，详情可参考新收录的资料