例文
- ZEPLIN-II was the first two-phase system deployed to search for dark matter in the world; it consisted of a 30 kg liquid xenon target topped by a 3 mm layer of gas in a so-called three-electrode configuration : separate electric fields were applied to the bulk of the liquid ( WIMP target ) and to the gas region above it by using an extra electrode underneath the liquid surface ( in addition to an anode grid, located above the gas, and a cathode, at the bottom of the chamber ).
