helical造句

Two types of viral symmetry have been recognized, the cubical symmetry and helical symmetry.
已经证实病毒有两种对称型, 即立体对称和螺旋对称.

The polynucleotide chain is helical.
多核苷酸键是螺旋形的.

The high laevorotation of L - cystine depends on a specially helical structure of its molecular.
指出了L - 胱氨酸高度的左旋性是由其分子的特殊螺旋结构决定的.

Objective To study the diagnosis value of helical CT singlet hilum of lung and mediastinal lymphadenectasis.
目的探讨螺旋CT对单纯肺门纵隔淋巴结肿大的表现及诊断.

Methods: The root canalroot canal orifice burs and helical drilling bits were prepared in advance.
方法: 采用根管口台阶状车针与螺旋型根管钻组合起来扩大根管.

In a globular protein, certain portions of the chain are coiled into helical segments.
在球状蛋白中, 链的某些部分被盘成螺旋状.

• #helical