ボトルネック効果 です
botorunekku kōkadesu
1. Bottleneck effect.
Noun
#260375
1. Bottleneck effect.
1. necklace
1. bottle
1. neck
2. bottleneck; obstruction
3. neckline
1. arteriosclerosis; hardening of the arteries
1. effective; successful
1. opposite effect; adverse effect
1. effect; effectiveness
2. effects (e.g. sound effects, visual effects, special effects)
1. highly priced; expensive