螺线 meaning in English

spiral; spire; helix (旋); helical; spiral curve

A neat solution of the quadrature problem can be achieved with the spiral of archimedes .
使用阿基米德螺线可以轻松解决求积分的问题。
show that we have the following special cases of the sinusoidal spiral, =acosnθ, where n is a rational number.
试证明：我们有正弦螺线acosn（n是有理数）的下列特殊情况。
Bifilar helix biperiodic electrostatic focusing
双螺线双周期静电聚焦
Detail view of solenoid valve and water entry
螺线阀及入水口详图。
Galvanized steel self tapping screw
镀锌自攻螺线

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