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拱腹起拱线 拱内弧起拱线
intradosspringingline
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拱内弧起拱线
intrados springin line intrados springing line soffit springing
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拱腹起拱线
intrados springing line springing of intrados
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拱外弧起拱线
extrados springing line
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起拱线
arch spring line arch springing line spring line, backing line springline
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拱背起拱线点
extrados springing soffit spring
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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 m...
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起拱
arch camber bridge bridging rising of arch skew back
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拱线脚
arch moulding
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梁拱线
camber curve
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路拱线
crown line
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外拱线
extrados
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起拱板
camber-board
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起拱层
springing course
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起拱点
springing of curve
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起拱度
rise of span
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起拱石
skew back stone skewback springer springing block
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突起拱
raised arch
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