This produces a round cross section which reflects light to give the improvement in luster.
使纤维的截面呈圆形，这有助于对光的反射作用，因此改善了光泽。
The method using interference rib is introduced, which simulate the wind vibration of round cross-section rod via the test, and gain some effect to reduce the vibration.
提出利用抗扰条肋抑制此类风致振动的方法，并通过试验方法模拟了圆截面杆件的风致振动，取得一定的振动抑制效果。
There are many long and elastic round cross-section rod structures in quayside container crane, whose frequency are so low that it is easy to arouse crosswind resonance.
岸边起重机结构中有许多长的弹性圆截面杆件，自振频率比较低，很容易发生横风共振。
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