物种一旦消失就再也找不回来了，随物种一同丢失的可能还有某种疾病的治愈之法、对进化史的新见解、生态链中的其他关键角色等等。
Species can be lost forever, and with it, possible cures for disease, insights into the history of evolution, critical members of ecosystems.
滤除这些噪声将导致滞后反应，较高的信元丢失和较低的链路利用。
Filtering out the noise will lead to sluggish response, with higher cell loss and lower link utilization.
自组织网络中无线信道的时变特性和网络拓扑的不断变化导致了链路的频繁断续，使得数据包大量丢失。
In AdHoc network, the pause of chain-lines is caused by the continuous change of wireless channel and the expanding of network, which leads to the loss of the data package.
利用这些概念，提出S粗集的f记忆特性，S -粗集的F -记忆定理，F -记忆链上知识丢失原理。
F-memory characteristics of S-rough sets, F-memory theorem of S-rough sets and the knowledge loss principle of F-memory chain are presented.
对于由链路出错所引起的数据包丢失，可以明显加快发送窗口的恢复速度，从而大大提高卫星链路中tcp的吞吐量。
For the packet loss caused by the link error, it can recover the congestion Windows quickly, so the goodput of TCP in satellite net can be improved.
由于低功耗无线通信不确定性、链路质量不稳定性以及节点失效等问题，传感器网络很容易导致路由数据包丢失。
But the link quality of WSN is unstable and the network easily has nodes failures, so the data loss is an open problem in wireless sensor network.
从实际出发，结合SPA得到了供应链关系预警指数，有效防止信息丢失；
To proceed from reality, early warning index in supply chain relation has been obtained combing with SPA, which could prevent the loss of information effectively;
从实际出发，结合SPA得到了供应链关系预警指数，有效防止信息丢失；
To proceed from reality, early warning index in supply chain relation has been obtained combing with SPA, which could prevent the loss of information effectively;
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