プランジャ形磁気回路の磁気吸引力特性について
Force-stroke characteristics of a plunger-type electromagnetic actuator for a bell ringer

Yutaka Ichinose
1988 Acoustical Science and Technology  
doi:10.20697/jasj.44.12_923 fatcat:ky3diu5xz5fjdd5i4thzsaejvi