[00:00.00]Chapter 9 Database Management System [00:03.07]第九章 数据库管理系统 [00:06.14]Dialogue 1 [00:07.82]句型1 [00:09.51]A:Hey ,Greg , Check out my new wallpaper! [00:12.43]嘿,Greg,看一下我屏幕的新背景画面! [00:15.

发表于:2018-12-05 / 阅读(117) / 评论(0) 分类 电脑英语

Fade - This is a reduction in the received signal. It is caused by absorption, refraction, or reflection. Fax - This is a shortening of Facsimile, and it refers to one fax machine sending a digital re

发表于:2019-01-03 / 阅读(48) / 评论(0) 分类 电信英语

This is Scientific Americans 60-Second Science. Im Christopher Intagliata. Got a minute? Theres one message waiting for you. Imagine that you wanna send a secret message to your colleague at the CIA. You can encrypt it to prevent counterspies from re

发表于:2019-01-08 / 阅读(68) / 评论(0) 分类 Scientific American(五)月

拓扑排序 topological sort 偏序 partical order 拓扑有序 topological order AOV网 activity on vertex network AOE网 activity on edge network 关键路径 critical path 匹配 matching 最大匹配

发表于:2019-02-01 / 阅读(58) / 评论(0) 分类 实用英语

有关物流的术语 物品 article 物流 logistics 物流活动 logistics activity 物流作业 logistics operation 物流模数 logistics modulus 物流技术 logistics technology 物流成本 logistics cost 物流管理 logistics management 物流

发表于:2019-02-03 / 阅读(43) / 评论(0) 分类 实用英语

Imagine that you want to send a secret message to your colleague at the CIA. You can encrypt it to prevent counterspies from reading it. But they'll still know you were sending some sort of message. There's a better optionsteganographywhich means hid

发表于:2019-02-09 / 阅读(39) / 评论(0) 分类 实用英语