helicallyadv.成螺旋形helicaladj.螺旋状的helical flash tube螺旋形闪光管helical line error螺旋线误差helical Mycoplasma卷曲状支原体helical rake angle螺旋前角,螺旋截尖角helical thickening螺旋加厚helical core fiber螺旋心光纤Helical inlet port螺旋进气道helical delay line螺旋管延迟线helical flash lamp螺旋型闪光灯helical propulsion螺旋推进