1.
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。
2.
Research on Technology of Twin Symmetry Roll Axial Rolling Spiral Bevel Gear;
对称双辊轴向轧制螺旋锥齿轮工艺研究
3.
New Technology of Twin Symmetry Roll Axial Rolling Passive Spiral Bevel Gears
对称双辊轴向轧制从动螺旋锥齿轮新工艺
4.
For example, the spiral shape of a seashell has the symmetry of a golden spiral,
例如，贝壳的螺旋即与黄金螺旋的比例相称，
5.
For example, the spiral shape of a seashell has the symmetry of a golden spiral, another derivation of the golden ratio.
例如，贝壳的螺旋即与黄金螺旋（黄金比例的衍生形式）的比例相称。
6.
Effects of 16-slice Spiral CT Pitch on Image Quality
16层螺旋CT螺距对图像质量的影响
7.
The Jacobian matrix of velocity of the PMT is obtained by using screw theory and the asymmetry of the matrix is analyzed.
利用螺旋理论求得了该机床的速度雅可比矩阵,并对其非对称性进行了分析。
8.
The Preparation and Growth Mechanism of Coiled Carbon Nanofibers with Symmetrical Structure and Multi-Branched Carbon Fibers
具有对称结构的螺旋碳纤维和多枝状碳纤维的制备及生长机理研究
9.
Of or relating to a gastropod shell that coils clockwise and has its aperture to the right when facing the observer with the apex upward.
右旋的软体动物的螺形外壳上的螺线顺时针螺旋即顶点向上，面对观察者时，螺线向右旋转
10.
a balance that measure weight by the tension on a helical spring.
在螺旋状的弹簧上依靠拉力称物体重量的秤。
11.
This machine adopts load sensors for weighing and adopts horizontal double auger feeding.
该机组采用卧式双螺旋喂料,传感器称量设计。
12.
spiral part of a screw
（螺钉的）螺旋部分.
13.
This machine can kit with electronic antomatically calcuateinstrement,combination instrument, measuring cup, spiral type to calulate machine.
此机可与电子自动计量称、组合称、量杯计量杯、螺旋式计量机相配套。
14.
helical gear with helix angle
带螺旋角的螺旋齿轮
15.
paranemic spiral
平行螺旋，反向双股螺旋
16.
helical curve [ line ]
螺旋曲线螺旋(取向)照相
17.
Influence of nut thread shape and screwing length on bolt root stress;
螺母牙形及旋合长度对螺栓牙根部应力的影响
18.
Any linkage which contains a screw pair, for example, is a spatial mechanism, since the relative motion within a screw pair is helical.
凡带有如螺旋副之类的连杆都是一个空间机构,因为螺旋副的相对运动是螺旋运动。