九氣〓星型航空發動機の全直徑を極小ならしめる行程〓徑比
On the Stroke-Bore Ratio which makes the Overall Diameter of the 9-Cylinder Radial Aero-Engine Minimum

Yosikazu MORIYAMA
1935
doi:10.14822/jjsass1934.2.5_553 fatcat:otwzphk36fgspkezvgqhcqtscu