Crookes space

短语

[医] 阴极暗区, 克鲁克斯氏暗区(X线管)

词形变化

Crookes spaces 复数 Crookes spaces

释义与例句

n.
  1. 1.

    The dark space within the negative-pole glow at the cathode of a vacuum tube, observed only when the pressure is low enough to give a striated discharge.

    过时 物理

词源

After Sir William Crookes, English chemist, who first described it.

来源：wiktionary