concentrator

名词 n.
中文释义

英文释义

名词 n.
  1. One who concentrates.
    — Experienced classroom teachers are well acquainted with the attention-seeker, the shy girl, the aggressive boy, the poor concentrator, the slow student […]
  2. A hub.
  3. An apparatus for the separation of dry comminuted ore, by exposing it to intermittent puffs of air.
  4. A frame or ring of wire or hard paper fitting into the cartridge case used in some shotguns, and holding the shot together when discharged, to secure close shooting; also, a device for slightly narrowing the bore at the muzzle for the same purpose.

词形变化

concentrators plural

词汇关系

衍生词
haemoconcentrator hemoconcentrator microconcentrator preconcentrator superconcentrator

词源

Etymology tree
English concentrate
English -or
English concentrator
From concentrate + -or.
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