But they are very expensive and can't be popularized. So because of it, I design a performance test virtual system of power line carrier communication network.
但是它们都非常的昂贵，不能普及，本文针对此，设计了电力线载波通信网络的网络性能虚拟测试仪。
Not only that, but the nervous system must also be trained, because it is the carrier of impulses through the sensory and motor channels.
不仅如此，神经系统也必须接受训练，因为它是通过感觉和运动通道运输神经脉冲的工具。
But the issuing bank stated that the correction should have been authenticated by the carrier whose name appears on the heading, because the issuer of the document was the carrier, not the agent.
但是，开证行称该更正应由名称出现在顶部标题上的承运人证实，因为单据的出具人是承运人而不是代理人。
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