Cold plasma, a combination of oxygen and helium gas concentrated into a lightening-like beam, has previously been used by medics to clean bacteria off wounds.
冷等离子，是由氧气和氦气混合集中成的光束，先前主要在医疗上用来清除伤口的细菌。
2
The Neutral Beam Injection (NBI) system requires a clean high vacuum environment. The liquid helium cryocondensation pump with high pumping speed is an ideal vacuum obtain device.
中性束注入系统要求有洁净的动态高真空环境，大抽速液氦冷凝泵是满足此要求的理想真空获得设备。
3
The principle and conditions being satisfied for beamclean-up are discussed.