The comprehensive performance of tube bundle with different spiral direction is better than the same direction. The best range of spiral angle has been determined which is from 20°to 25°by optimizing.
通过对螺旋角的优化，确定了螺旋角的最佳取值范围为20°＜α＜25°。
参考来源 - 高效传热低流阻换热器的开发研究·2,447,543篇论文数据，部分数据来源于NoteExpress
The wheel head can be orientated in double axes so that any spiral Angle and back Angle may be adjusted rapidly.
该机床磨头可以又轴定位，任何螺旋角和后角均可快速调整。
The study shows that the stress in tooth middle is larger than that in tooth root with big spiral Angle and light load.
研究表明，大螺旋角或小载荷时，齿腰应力大于齿根应力。
The spiral angle of graduated circle was rough estimated by measuring the addendum circle diameter and modified on milling machine.
测量齿顶圆直径估算分度圆螺旋角，用分度头在铣床上修正分度圆螺旋角，并进行误差分析。
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