During the last decade a variety of methods has been devised and adopted for balancing flexible shafts. 近十年来对于挠性轴转子的平衡提出了并采用了多种方法。
If you used a more flexible material for making these drillpipes, they would be able to sustain greater bending stress. 假如你使用一种更具挠性的材料来制造这些钻杆它们就能承受更大的弯曲应力。
The test uses an adjustable nozzle and squirts a shot of polypropylene into the air. 测试使用的可调喷嘴和鞘一杆聚丙烯到空气中。