block system

短语

[经] 分块核对制

词形变化

block systems 复数 block systems

释义与例句

n.
  1. 1.

    On railways, a system by which the track is divided into sections of three or four miles, and trains are run by the guidance of electric signals so that no train enters a section or block before the preceding train has left it.

    交通
  2. 2.

    Given a group G that acts on a set X, a partition of X that is G-invariant.

    数学