(1) 当点 P 与 B 重合时 ,AP 最长 , 此时∠ MCN=150 0 如图所示,连接 MN 交 CB 于点 O , ∵ PM=PN=CM=CN=6.0 分米 , ∴四边形 CMPN 是菱形, ∴ CB ⊥ MN, 即∠ COM=90°, ∠ MCO= ∠ MCN=75° , 在 Rt △ MCO 中 , ∠ MCO=75°,CM=6.0 分米 , ∴ CO=CM·co...
V. Catalyu€rek, "Hardware/software vectorization for closeness centrality on multi-/many-core architectures," in Proc. IEEE Int. Parallel Distrib. ... AE Sariyuce,E Saule,K Kaya - Parallel & Distributed Processing Symposium Workshops 被引量: 19发表: 2014年 Hardware/Software Vectorization for ...
(1)当点P与B重合时,AP最长, 此时∠MCN=1500 如图所示,连接MN交CB于点O, ∵PM=PN=CM=CN=6.0分米, ∴四边形CMPN是菱形, ∴CB⊥MN,即∠COM=90°,∠MCO=∠MCN=75°, 在Rt△MCO中,∠MCO=75°,CM=6.0分米, ∴CO=CM·cos∠MCO=6.0×0.26=1.56(分米), ...
【题目】如图1所示的遮阳伞,伞柄垂直于水平地面,其示意图如图2所示,当伞收紧时P与A重合,当伞慢慢撑开时,动点P由A向B移动,当点P到达B时,伞张得最开,此时最大张角∠ECF=150°,已知伞在撑开的过程中,总有PM=PN=CM=CN=6.0分米CE=CF=18.0分米. (1)求AP长的取值范围; (2)当∠CPN=60°,求AP的值; (...
Centering device for fully automatic reversible and unreversible two-purpose belt type conveyer The utility model relates to a centering device for a fully automatic reversible and irreversible two-purpose belt type conveyer, which comprises a cross b... 茆令军 被引量: 0发表: 2002年 Centering a...