91色情片

In The Particle Hunters (Cambridge University Press, 拢14.95, ISBN 0 521
47686 0), Yuval Ne鈥檈man and Yoram Kirsh guide you expertly on a journey that
begins in 400 BC, when the existence of atoms was first postulated by the Greek
philosopher Democritus, to the present world of quarks and leptons. Now in its
second edition, this is a clear and thoroughly up-to-date introduction to the
particles as well as to the hunters.