Adjective:

1. of or relating to or characteristic of thermions;

   "thermionic cathode"
   

Therkel泰克尔theart.那；这；这些；那些adv.（用于比较级前）更加；用于最高级前；(用于形容词、副词比较级前)越 ... 越 ...The Valley of Fearn.《恐怖峡谷》；阿瑟·柯南道尔(Sir Arthur Conan Doyle)著the Hart Dynasties采尔尼克the furnace roller炉内辊The Quiet American文静的美国人The Statue of Zeus宙斯神像the content of fat脂肪含量the westward drift西移the kaixi calendar开禧历The Rhythm of Lifen.《生活的节奏》；艾丽斯·梅内尔(Alice Meynell)著The reason is this理由如下。

cesium thermionic converter铯热离子变换器