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helix

/hee-liks/US // ˈhi lɪks //UK // (ˈhiːlɪks) //

螺旋线,螺旋,螺旋体,螺旋形

Related Words

Definitions

n.名词 noun
  1. 1

    plural hel·i·ces [hel-uh-seez], /ˈhɛl əˌsiz/, he·lix·es.

    • : a spiral.
    • : Geometry. the curve formed by a straight line drawn on a plane when that plane is wrapped around a cylindrical surface of any kind, especially a right circular cylinder, as the curve of a screw. Equation: x = a sinθ, y = a cosθ, z = b θ.
    • : Architecture. a spiral ornament. either of two scrolls issuing from a cauliculus.Compare Corinthian.
    • : Anatomy. the curved fold forming most of the rim of the external ear.
    • : Biochemistry. alpha helix.

Synonyms & Antonyms

as incurve
Synonyms
arc弧线,弧形,弧度,电弧arch拱门,拱形,拱桥,拱形的contour轮廓线,轮廓,轮廓图,等高线loop循环,环路,圈子,襻trajectory轨迹,弹道,轨迹图,径迹ambit氛围,氛围的影响bend弯曲,弯曲的,拐弯处,折弯bight海岸线,海岸边,海岸,海岸边的bow鞠躬,弓箭手,弓箭,躬身camber弯曲度,弯曲度大,驼背,驼峰catenary纵贯线,脉络,全长,脉络图chord和弦,和音,和声,弦乐circle循环,圈子,圆圈,圆circuit电路,回路,回环,回回路路circumference周长,圆周率,周率,方圆compass指南针,罗盘,指北针,罗经concavity凹凸不平,凹性,凹陷,凹面crook骗子,诈骗,诈骗犯,骗人curlicue卷曲,弯曲,曲线,弯曲的curvature曲率,弧度,弯曲度,弯曲程度ellipse椭圆,椭圆形,椭圆体,椭圆度festoon花环,花旗,花灯,花彩flexure弯曲,弯曲度,屈曲,挠性hairpin发卡,发夹,发簪,钗half-moon半月,半月形,半月球,半月型horseshoe马蹄铁,马蹄,马蹄形,马蹄形的hyperbola双曲线,双曲,双曲线图,双线incurvation招致,招致的后果,招致死亡,招致损失incurvature弯曲度,不孕症,弯曲,不成熟meniscus半月板,脑膜,半身板ogee楔子,楔形,楔形物,楔形的parabola抛物线quirk诡异,诡计多端,诡辩,诡秘round围绕,圆形的,围绕着,绕过sinuosity卷曲性,蜿蜒曲折,蜿蜒性,蜿蜒度sweep扫荡,扫除,清扫,打扫swerve转向,转身,转移,转动turn变成,转弯,变成了,转变vault拱顶,穹顶,拱门,金库whorl漩涡,漩涡状,涡旋,涡流curvation治愈,振奋人心,治疗,振作rondure润华,润泽,润泽度,润华公司

Examples

  • One of the last century’s most dramatic discoveries came in 1953, when James Watson and Francis Crick, aided by an X-ray image produced by Rosalind Franklin, figured out the double helix structure of the genetic molecule DNA.

  • Scouring the human genome today, it’s clear we have viral DNA and other genetic elements embedded inside our own double helices.

  • Based on enormously complicated biophysics—much of which remains mysterious—the string folds into delicate shapes, such as sheets of twisting and turning strands, or helices that wrap around each other.

  • These drugs interfere with the double helix zip-unzip-zip-again process of RNA and DNA replication.

  • This process, known as epigenetics, involves the addition of small chemical tags known as methyl groups to the DNA double helix.

  • Maazel writes about a soon-to-be Helix hostage, Anne-Janet, who was on “cancer furlough.”

  • The largest is Helix pomatia (figured on pp. 11 and 12), which often goes by the name of “the edible snail.”

  • In 1878 he removed to Umatilla county, Oregon, where he took up a homestead and a timber culture near Helix.

  • He went carelessly too near the still revolving machinery, and his coat-flap was caught and wound into the helix of the pugmill.

  • There are to be found in this bed of marl several species of helix and voluta.

  • If the latter is in the form of a helix its magnetic field resembles that of a straight bar magnet.