If the metalelectrode could be replaced then it might be possible to make the whole thing using just a printer.
如果金属电极可以被更换那么将有可能仅使用一台打印机就完成整个产品的制造。
2
Conventional transistors use a metalelectrode, called the gate, to control the flow of electrons through a planar channel in the silicon substrate.
传统晶体管使用一个叫做“栅极”的金属电极，以控制电子在平面硅基片上的沟道中的流动。
3
The key component in the process is a catalyst -- cobalt metal, phosphate and an electrode, placed in water -- that produces oxygen gas from water, while another catalyst produces hydrogen gas.