And logistics support and auxiliary function as a candidate for the natural become exteriorization business.
而物流作为一个支持与辅助功能自然成为外部化业务的候选。
英语百科
Auxiliary function
In mathematics, auxiliary functions are an important construction in transcendental number theory. They are functions that appear in most proofs in this area of mathematics and that have specific, desirable properties, such as taking the value zero for many arguments, or having a zero of high order at some point.