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開口効率 / かいこうこうりつ : 1）open efficacy
開口率 / かいこうりつ : n 1）aperture ratio
開口数 / かいこうすう : n 1）numerical aperture (in photography)
開口分泌 / かいこうぶんぴ : 1）exocytosis 2）exocytotic
開口一番 / かいこういちばん : n-adv 1）at the very beginning of one's speech 2）the first thing (one) says after opening the mouth
開口 / かいこう : n vs 1 1）opening 2）aperture (e.g. camera) 2 3）opening one's mouth 4）beginning to speak 3 5）(adj-f) open 6）broad P
開口期 / かいこうき : 1）period of dilation 2）open period
開口状態 / かいこうじょうたい : 1）open state
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開口効率

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