【122 KB-】評論
V=πDN/1000 D=30 N=600n=3.14×30×600/1000n=56520/1000n=56.52m/minn56.52/0.75=75.36m/min#
【122 KB-】評論
V=πDN/1000 D=30 N=600n=3.14×30×600/1000n=56520/1000n=56.52m/minn56.52/0.75=75.36m/min#
【122 KB-】評論
V=πDN/1000 D=30 N=600n=3.14×30×600/1000n=56520/1000n=56.52m/minn56.52/0.75=75.36m/min#