And the operators are improved by establishing the Order Exchange Unit and Order ExchangeList to satisfy the need of integer coding in drilling path optimization.
通过建立序交换元和序交换集对算法的操作算子进行改进，满足钻削路径优化问题中整数编码的需要。
2
A cottage industry of Web sites has also popped up, enabling life list enthusiasts to exchange ideas ranging from learning Japanese to getting a tattoo.
一个简陋的网站也已出现，使得生命清单的爱好者能够交流想法，范围从学习日语到刺刻纹身。
3
To get on the white list, a dozen or so tax-information exchange treaties are needed.