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helium [ˈhiːlıəm] N CHEM

hell [hel] N

3. hell [用于加强语气或咒骂]:

helm [helm] N

I . help [help] VB trans

III . help [help] N

IV . help [help] INTERJ

helmet [ˈhelmıt] N

heliport [ˈhelıpɔːt] N

helpline [ˈhelplaın] N

I . prefix [ˈpriːfıks] N LING

II . prefix [ˈpriːfıks, priːˈfıks] VB trans

Monolingual examples (not verified by PONS Editors)

English
The rough secondary-structure content of a biopolymer (e.g., this protein is 40% -helix and 20% -sheet.) can often be estimated spectroscopically.
en.wikipedia.org
In essence, leaves form a helix pattern centered around the stem, either clockwise or counterclockwise, with (depending upon the species) the same angle of divergence.
en.wikipedia.org
The catalytic domain consists of a double-stranded -helix core that is stabilized by three -helices packed along the major -sheet.
en.wikipedia.org
When all the base pairs in a DNA double helix melt, the strands separate and exist in solution as two entirely independent molecules.
en.wikipedia.org
An upward helix follows the downward turn and is followed by a right corkscrew.
en.wikipedia.org
Furthermore, the interaction between protein side-chains of the -helix with the DNA bases in the major groove allows for the DNA-sequence-specific recognition.
en.wikipedia.org
In apoaequorin, each pocket is bordered by sequences that create alpha helices giving rise to the helix-loop-helix conformation.
en.wikipedia.org
A common arrangement uses a series of coils arranged in a helix around the toroid, creating an electrical analog of the mechanical layout.
en.wikipedia.org
Occasionally, the knurled pattern is a series of straight ridges or a helix of straight ridges rather than the more-usual criss-cross pattern.
en.wikipedia.org
If the wave is frozen in time, the electric field vector of the wave describes a helix along the direction of propagation.
en.wikipedia.org

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