principal axis of symmetry：主對(duì)稱軸

主應(yīng)力軸 principal axis of stress | 主對(duì)稱軸 principal axis of symmetry | 主震 principal earthquake

direction of principal axis：軸方向

direction field 方向場(chǎng) | direction of principal axis 軸方向 | direction of principal curvature 助率方向

principal axis transformation：軸變換

principal axis 軸 | principal axis transformation 軸變換 | principal branch 殖

principal axis transformation：主軸變換

橢圓(二次曲面)主軸 principal axis of ellipse (quadric) | 主軸變換 principal axis transformation | 主頁;主枝 principal branch

principal axis transformation：軸變

principal axis of inertia 慣性軸 | principal axis of strain 應(yīng)變軸 | principal axis transformation 軸變

principal axis：主軸

在三維(3D)應(yīng)力狀態(tài)大部份是以應(yīng)力張量來表示,任何張量都具有相對(duì)的應(yīng)力主軸(principal axis),當(dāng)應(yīng)力狀態(tài)變化時(shí),此應(yīng)力主軸也會(huì)跟著轉(zhuǎn)動(dòng),就如同材料受力變形一樣.

principal axis：軸

在三維(3D)應(yīng)力狀態(tài)大部份是以應(yīng)力張量來表示,任何張量都具有相對(duì)的應(yīng)力主軸(principal axis),當(dāng)應(yīng)力狀態(tài)變化時(shí),此應(yīng)力主軸也會(huì)跟著轉(zhuǎn)動(dòng),就如同材料受力變形一樣.

principal axis：主軸 主軸

■ pressure gradient 壓力梯度 圧力勾配 | ■ principal axis 主軸 主軸 | ■ principal axis of pressure 主壓力軸 主圧力軸

Principal axis factoring：主軸因子法

Preliminary analysis, 預(yù)備性分析 | Principal axis factoring,主軸因子法 | Principal component analysis, 主成分分析

electrical principal axis：電主軸

增益:off-axis amplify gain | 電主軸:electrical principal axis | 共軸跟蹤:On axis tracking