The biological characteristics and utilization value of three species aquatic snails are reported in this paper.
介绍大理地区三种水生螺生物学特性、资源状况及利用价值。
Effects of temperature,sediment and food on hatching and growth of juvenile,young Hemifusus tuba
不同温度、底质和饵料对管角螺孵化和稚、幼螺生长的影响
any of several creeping marine gastropods with a spirally coiled shell: whelks; tritons; moonshells; neritids.
几种爬行的海生腹足动物，有螺旋盘卷的壳；蛾螺；法螺；海月贝；蜒螺。
helical coil steam generator
螺旋管式蒸汽发生器
small Edison screw-cap
小型爱迪生螺旋灯头
medium Edison screw-cap
中等爱迪生螺旋灯头
Some biological molecules have the form of a helix.
有些生物分子呈螺旋状.
The profession production conducts high strength inside and outside hex bolts and all kinds of screws.
专业生产经营高强度内、外六角螺栓和各类螺钉。
Studies on Larval Feeding Ecophysiology of Ivory Shell, Babylonia Areolata Link;
方斑东风螺幼体摄食的生理生态研究
Studies on Physiological and Biochemical Effect of Iodine on Spirulina Maxima and Cultivation of Iodine-rich Spirulina;
碘对螺旋藻的生理生化效应及富碘螺旋藻的培养研究
Effects of Te(IV) Stress on the Growth of Spiurlina and the Spectra Studies;
Te（IV）对螺旋藻的生理生化影响及螺旋藻的光谱学研究
Bioaccumulation of Cr (III) in Spirulina platensis and Its Effects on Cultivation of Spirulina platensis
Cr(III)在钝顶螺旋藻中的生物富集及其对钝顶螺旋藻生长的影响
"Bolts,screws & nuts"
"螺栓,螺丝及螺帽"
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。
he got a bright red top and string for his birthday.
在生日那天，他收到了一个浅红色的陀螺和一条陀螺鞭。
small flexible parasitic spirochetes having three to five wavy spirals.
具有柔软躯干的寄生螺旋菌小属具有3到5个波浪型的螺旋。
Imposex in Babylonia areolata and B. formosae habei as well as the effects of imposex on their reproduction
方斑东风螺和波部东风螺的性畸变及其对生殖的影响
Effects of screw number in dynamic compression plates on the stability of plate and screw structure
螺钉数量对钢板螺钉内固定结构载荷的生物力学影响
small spirochetes some parasitic or pathogenic.
小型寄生或致病的螺旋菌。