拱内弧起拱线的英文

• intrados springin line
• intrados springing line
• soffit springing

• 内    inner; inside; within
• 弧    arc bow
• 起    rise; get up; stand up
• 拱线    line of apsides; apse line
• 拱腹起拱线 拱内弧起拱线    intradosspringingline
• 拱外弧起拱线    extrados springing line
• 起拱线    arch spring line; arch springing line; spring line, backing line; springline
• 拱内弧半径    intrados radius; soffit radius
• 拱腹起拱线    intrados springing line; springing of intrados
• 拱背起拱线点    extrados springing; soffit spring
• 拱线    [天文学] line of apsides; apse line◇拱线长度 [天文学] line of apsides; 拱线脚 arch moulding; 拱线运动 apsidal motion
• 内弧    concave; inner arc; knock-knee; pressure side
• 起拱    arch camber; bridge; bridging; rising of arch; skew back
• 拱内面    soffit
• 拱线脚    arch moulding
• 梁拱线    camber curve
• 路拱线    crown line
• 外拱线    extrados
• 凹度,内弧    concavity
• 内弧面    forward face; intrados; pressure surface
• 内弧球    isnwinger
• 腿内弧    bowed leg
• 洋内弧    intra-oceanic arc
• 起拱板    camber-board
• 起拱层    springing course