The poison element of ceramic ornamental materials and its changes of the limit allowed is described, and its research tendency and realistic state is summed up.
对陶瓷装饰材料中有毒害元素和其允许限定值的变迁进行了论述，归纳了其研究动向与现实状况。
This can be used to prevent attacks that attempt to poison the DHCP binding database, and to rate-limit the amount of DHCP traffic that enters a switch port.
这可用于防止试图破坏DHCP绑定数据库的攻击，并对进入交换机端口的DHCP流量限速。
This can be used to prevent attacks that attempt to poison the DHCP binding database, and to rate-limit the amount of DHCP traffic that enters a switch port.
这可用于防止试图破坏DHCP绑定数据库的攻击，并对进入交换机端口的DHCP流量限速。
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