switches in vtp transparent mode forward vtp advertisements but ignore information contained in the message.

the topic exchange also takes the routing-key property of the message into account by performing a pattern match on it.

topic交换器用过模式匹配分析消息的routing-key属性。

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upon reaching the destination node the vlan id is removed from the packet by the adjacent switch and forwarded to the attached device.

到达目的地端所接的交换器时，这个含有VLAN编号的表头就会被拿掉，然后将封包传给目的地的设备。

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the application of plc in the automatic control of filter and ion exchanger was introduced. using the s7-200 cpu 226 plc as the controller, the hardware and software of the system were designed.

针对PLC在造纸厂水处理过滤器及离子交换器中自动控制的实际应用，选用S7200CPU226型PLC为控制器，对系统的硬件设计和软件设计作了介绍。

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to the single stage cycle with an expander, a suction line heat exchanger will increase the cooling capacity, but have little effect on cop;

单级压缩时如果系统中带有膨胀机，采用吸气热交换器可以提高制冷量，但对性能系数（cop）值的影响不大；

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switches examine the source address of frames that are received on the ports to learn the mac address of pcs or workstations that are connected to it.

交换器检验从连接埠所接受的讯框的来源位址，以学习连线到它的那些个人电脑或工作站的MAC位址。

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additionally, unlike other technologies, mpls won't consume your budget because many existing routers and wan switches support the standard.

此外，与其他技术不一样，MPLS不会增加预算，因为很多现有的路由器和广域网交换器支持此标准。

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the packet is then forwarded to the appropriate switches or routers based on the vlan identifier and mac address.

然后根据这个VLAN号码和实体（MAC）位址，这个封包会被送到适当的交换器或是路由器。

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for this default direct exchange ( and only for that) the broker also declares a binding for every queue in the system with the binding key being identical to the queue name.

对这个默认的direct交换器（也仅仅是对这个交换器），协商器将会声明一个绑定了系统中所有队列的绑定器。

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switch a does not have the mac address of router y and will therefore flood the frame out its ports.

交换器A因为没有路由器Y的MAC位址，所以会将这个讯框从所有的埠泛流出去。

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the primary advantage of using a trunk link is a reduction in the number of router and switch ports used.

使用Trunk线路的好处是缩减路由器以及交换器所使用的连接埠。

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compared with zcs pwm boost full-bridge converter, the proposed converter has no current duty loss.

与ZCS PWM Boost全桥交换器相比，所提出的变换器没有电流占空比丢失的问题。

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logical connectivity involves a single connection, or trunk, from the switch to the router.

逻辑连线只使用单一的连接线路，该线路即为Trunk，它连接了交换器与路由器。

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cfd study on the air side performance of an automobile louvered-fin type heat exchanger

车用百叶窗翅片式热交换器空气侧性能的CFD研究

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the mac address will not be aged out automatically by the switch.

MAC位址将不会被交换器自动移除。

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an investigation on vibration frequency of u-tube heat exchanger

U形管热交换器振动频率的研究

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heat balance analysis of high power co_2 laser and calculation to the heat exchanger

高功率CO2激光器热平衡分析及热交换器换热计算

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the combination rule of the method satisfies commutative law and associative law, fully uses information of conflict evidences, and solves three kinds of problems appeared in conflict evidences combination process.

该组合方法满足结合律和交换律，充分利用冲突证据信息，解决了冲突证据组合中的三类问题。

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the basic concept of simplifying the evaluation of the inverse of a matrix with commutative partitioned submatrix is analyzed.

文中提出了服从乘法交换律的分块矩阵求逆矩阵的简化原理；

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study on the defense matrix meeting commutative law of multiplication

防御矩阵满足乘法交换律的证明

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conclusion: sporadic congenital teeth agenesis was often hypodontia, accompanied with delayed permanent teeth eruption. congenital teeth agenesis influences oral health and occlusion.

结论：散发性先天缺牙多为少数牙先天缺失，与性别无明显关系，伴有恒牙埋伏和乳牙滞留，缺牙部位具有随机性，先天缺牙影响口腔健康及咬合关系。

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