Contact reaction brazing(CRB) for milimetre waveguide in inert atmosphere has been investigated.

对毫米波器件在惰性气体保护下反应钎焊进行了研究。

Two methods of polarization now: spin exchange and metastability exchange are reviewed.

介绍了目前极化惰性气体常用两种方法——交换光抽运和亚稳态能级交换。