The reasonable size of twist bar diameter is gotten by theory analysis and calculation.

通过理论分析和计算，得出扭转辊试棒直径的合理尺寸。

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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。

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Starting off from the theory of spherical triangle, an analysis was carried out on the relation between component twist angle of spherical four-bar linkage and circuit of mechanism.

从球面三角理论出发，对球面四杆机构构件扭角和机构回路的关系进行分析；

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Not only did fate throw a cruel twist at the luxurious and acclaimed liner loaded with millionaires and ordinary people alike, there is no age bar among enthusiasts.

BBC: The last Titanic survivor, rescued aged nine weeks