【沈建佑】評論
100=3.14*D*N/100D=1000/3.14 F=1000/3.14*0.1*16
【小許(106台鐵機械佐已上】評論
速率=D*拍*N/1000100=100*3.14*☆/100........
【gaga618520】評論
⚠️ V=拍*D*N/1000F=ft*t*N