By C. I. F. invoice the price charged includes all the expenses of an F. O. B. invoice plus freight and marine insurance. 起岸价发票包括了离岸价发票的所有费用,此外加上运费和海险费。
An important point of I. B. M. is the existence of a new kind of symmetry, U ( 6), in nuclear structure. IBM的重要之点在于假定了核结构中存在一类新的对称性&U(6)对称性。