An S-twist yarn is one in which the fibers follow a spiral pattern parallel to the center bar of the letter s.
捻的纱线中的纤维成螺旋状并与字母s中间的斜杠平行。
The spiral crystal is just like a straight crystal bar with definite orientation coiled on a cylindrical surface. It is not formed spontaneously, but is formed under control.
这种螺旋晶体就像一根具有一定取向的直晶棒被弯曲盘卷在一个圆柱面上，它不是自发地而是受人工控制形成的。
This paper studies the tensile properties of stripe and round bar specimens for high grade(API X65~X70) spiral submerged-arc welding(SSAW) steel pipes.
通过试验研究了X65、X70级螺旋埋弧焊钢管不同拉伸试样——板状试样和圆棒试样的拉伸性能。
Spiral type steel bar hoop made by spiral steel bar hoop machine controlled by microcomputer can increase the antivibration property of building.
微机控制螺旋钢箍机所加工成型的螺旋型钢箍，能够提高建筑物的抗震性能。
So the high effective pre-stressed reinforced concrete hollow slab with Medium strength spiral-continuous -ribs steel bar has a good prospect.
因此，以中强螺旋肋钢丝为受力筋的预应力空心板具有广阔美好的发展前景。
In addition, spiral case design method by layers and blocks, concrete temperature control, construction quality control, additional anti-crack reinforcement bar disposal, etc.
并结合工程实际介绍了分层分块设计、混凝土温控、施工质量控制、增设温度筋和抗裂筋等技术措施。
Similar in size and grand design to our home galaxy (although without the central bar), spiral galaxy NGC 3370 lies about 100 million light-years away toward the constellation of the lion (Leo).
螺旋星系ngc 3370位于狮子座，距离我们约1亿光年，其大小和结构与我们银河系家园非常相似，只是没有中央旋棒。
Similar in size and grand design to our home galaxy (although without the central bar), spiral galaxy NGC 3370 lies about 100 million light-years away toward the constellation of the lion (Leo).
螺旋星系ngc 3370位于狮子座，距离我们约1亿光年，其大小和结构与我们银河系家园非常相似，只是没有中央旋棒。
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