Postage costs will be refunded ( to you ).邮费将退还 ( 给你 ).Send it to the address given with £1.50 to cover postage and administration...将它寄到指定地址，并附上1.50英镑以支付邮资和管理费。Sheets of postage stamps are perforated.一张张的邮票都打过接缝孔.Do you...
This method does not need to be either safe or idempotent.该方法不需要安全或者等幂.In this paper , we study nonnegative generalized idempotent matrices in detail.本文给出了一般非负广义幂等矩阵的充要条件.This matrix is idempotent.这个矩阵是等幂的....
In geochemical analysis we encounter ranges of analyte concentration that can span several orders of magnitude.在地球化学分析中,我们常常会遇到拟分析元素含量范围可以跨越好几个数量级的情况.The difficulties women encounter with their doctors partly explain why...