缠距的计算方法 L = d π / tgα L——缠距 d——口径 π——圆周率 α——缠角
问一道我觉得很难的题D Q N A L D+ G E R A L D—————————R Q B E R T已知:D=5
5.二面角α—l—β的平面角为120°,在α内,AB⊥l于B,AB=2,在β内,CD⊥l于D,CD=3,BD=1,M是棱
请教机械手公式L=(D/2)tgψ
l,d like to be a teacher .l —to—a—.哪个帅哥美女能告诉我~
再写一写,例(b—d.m—n.f—t.l—i)
一道无机化学题,下列溶液中缓冲能力最大的是( D )A.混合液中含0.15mol/L CH3COOH—0.05mol/L
( )Can l —— you some questions A.asks B.asking C.ask D.tell
初中英语首字母填空 l often d—— of my grangma in my dream 快
Your mother —very young A.look B.looks C.look like D.looks l
英语翻译We had wanted,we had wanted—oh,who knew what we’d been l
什么是EXO—L
l'd like to (learn to cook).提问 —— —— you —— —— ——