The legal system of controlledcarrier dated from the Cold War, and now most influences the government owned carriers of our nation.
受控承运人制度是冷战的产物，目前受其影响最大的就是我国国有承运人。
2
This paper presents an electricity-saving systemcontrolled by Single chip Microcontroller AT89C51 and power line signal carrier.
设计了1种在单片机AT89C51控制下运行的、利用电力线载波发射控制信号的节电控制系统。
3
Results Nanoparticle carriersystem can protect the genes, have a high carrying efficiency and a well targeting property, it also can improve the bioavailability, sustained and controlled release.