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concentration noun

  /ˌkɑn.sənˈtɹeɪ.ʃən/ , /ˌkɒn.sənˈtɹeɪ.ʃən/
  • The act or process of removing the dress of ore and of reducing the valuable part to smaller compass, as by currents of air or water.
  • The proportion of a substance in a whole.
  • (physical chemistry) The amount of solute in a solution measured in suitable units (e.g., parts per million (ppm))
 濃度, 集中
  • The act, process or ability of concentrating; the process of becoming concentrated, or the state of being concentrated.
 集中, 集中力, 濃度

concentrate verb

  /ˈkɑn.sən.tɹeɪt/ , /ˈkɒn.sən.tɹeɪt/
  • To increase the strength and diminish the bulk of, as of a liquid or an ore; to intensify, by getting rid of useless material; to condense.
 凝縮
  • (ergative) To bring to, or direct toward, a common center; to unite more closely; to gather into one body, mass, or force.
  • To approach or meet in a common center; to consolidate.
  • (intransitive) To focus one's thought or attention (on).
 集中

concentric

同心
concentration camp
強制収容所
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