翻訳と辞書 Words near each other ・ ProKarelia ・ Prokarin ・ Prokaryote ・ Prokaryotic acetaldehyde dehydrogenase dimerisation domain ・ Prokaryotic cytoskeleton ・ Prokaryotic DNA replication ・ Prokaryotic elongation factors ・ Prokaryotic initiation factor ・ Prokaryotic initiation factor-1 ・ Prokaryotic initiation factor-2 ・ Prokaryotic initiation factor-3 ・ Prokaryotic initiation factors ・ Prokaryotic phospholipase A2 ・ Prokaryotic release factors ・ Projected ・ Projected area ・ Projected dynamical system ・ Projected set ・ Projected tolerance zone ・ ProjectExplorer ・ Projectile ・ Projectile motion ・ Projectile point ・ Projectile use by living systems ・ Projection ・ Projection (alchemy) ・ Projection (linear algebra) ・ Projection (mathematics) ・ Projection (relational algebra) ・ Projection (set theory) Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Projected area ： ウィキペディア英語版 Projected area Projected area is two-dimensional area measurement of a three-dimensional object by projecting its shape on to an arbitrary plane. This is often used in mechanical engineering and architectural engineering related fields, specifically hardness testing, axial stress, wind pressures, and terminal velocity. The geometrical definition of a projected area is: "the rectilinear parallel projection of a surface of any shape onto a plane". This translates into the equation: :$A\_\; =\; \backslash int\_\; \backslash cos\; \backslash ,\; dA$ where A is the original area, and $\backslash beta\; \backslash ,$ is the angle between the normal to the surface A and the normal to the arbitrary plane onto which we project. For basic shapes the results are listed in the table below.〔.〕 |- | Circular disc || $A\; =\; \backslash pi\; r^2$ || $A\_\; =\; \backslash pi\; r^2\; \backslash cos$ |- | Sphere || $A\; =\; 4\; \backslash pi\; r^2$ || $A\_\; =\; \backslash frac\; =\; \backslash pi\; r^2$ |} ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Projected area」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.