有效地址

An effective sustainability plan starts with a baseline of the current eco-footprint and practices, launches programs to achieve immediate improvements, and incubates a culture which habitually addresses sustainability in policies and processes.

一个有效的可持续性计划始于基准当前生态足迹和做法，发射计划，以实现立即改进，并incubates的文化习惯地址可持续性的政策和程序。

So we conclude that the IPSec mechanism is effective to DDoS attacks with spoofed source address.

所以我们得出IPSec机制对源地址欺骗的DDoS攻击有效。

This model makes it easier for network manager to solve the problem of IP spoofing, and to trace network hacking activities.

所描述的方法可以有效地解决如地址欺骗、非法网络活动的记录和追查等问题

To be VALID, Proxy Forms must be duly signed, completed and deposited with the Honorary Secretary of The Tai Po Boat Club Limited not less than 72 hours prior to the Annual General Meeting, i.e., before (14th December 2005), 2005 and lodged with the Club Office during office hours 0900-1730 hours, Mondayto Sunday, in person only (by the member who appoints the proxy).

有效的代表人委任书必须以适当方式签名及填写，并要在周年会员大会举行前72小时前二零零五年十二月十四日，存到大埔船会有限公司义务秘书；委任人必须将代表人委任书亲身交到大埔船会有限公司行政办事处寄存，地址为大埔大尾督水上活动中心隔邻，(办公时间：每日上午九时至下午五时三十分)。

Don't spammers use e-mail authentication programs to see if your email address is valid?

不滥发电邮使用电子邮件认证程序，看看你的电子邮件地址是有效？

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。