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螺旋线 角
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Subject
Chinese
English
avia.
有效
螺旋线角
effective helix angle
mil., air.def.
等角平面螺旋天线
plane equiangular spiral antenna
tech.
螺旋线升角
angle of spiral
compr.
螺旋线角
helix angle
tech.
螺旋角大的螺线
quick spiral
tech.
齿轮渐开线及螺旋角测量仪
involute and helix measuring instrument
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