bias tube

例句：

1. 1. The bias tube is used to adjust the angle of the lens.
   偏心管用于调整镜头的角度。
2. 2. The engineer carefully installed the bias tube in the machine.
   工程师小心地将偏心管安装在机器中。
3. 3.The bias tube was a crucial part of the design, ensuring stability and accuracy.
   偏心管是设计中的关键部分，确保了稳定性和准确性。