n.

a ditch dug as a fortification having a parapet of the excavated earth

a long steep-sided depression in the ocean floor

同義詞：deepoceanic abyss

any long ditch cut in the ground

Trenched MOSFET termination with tungsten plug structures
Trenched field effect transistor with PN depletion barrier
Bridged ZnO nanowires across trenched electrodes
Vegetation on a Trenched Plot Twenty‐One Years After Establishment
Trenched epitaxial lateral overgrowth of fast coalesced a-plane GaN with low dislocation density
Film cooling effectiveness from trenched shaped and compound holes
Lutz, H. J. Vegetation on a trenched plot twenty-one years after establishment. Ecology
1710-V 2.77-m/spl Omega/cm sub 2 4H-SiC trenched and implanted vertical junction field-effect transistors
Fabrication and characterization of 11-kV normally off 4H-SiC trenched-and-implanted vertical junction FET
Estimating heterotrophic and autotrophic soil respiration using small-area trenched plot technique: Theory and practice