这些不稳定的接头一旦偏离正常的直线位置就很难校正。

These unstable joints are very difficult to correct once they deviate from the normal, straight position.

youdao

这些不稳定的接头一旦偏离正常的直线位置就很难校正。

These unstable joints are very difficult to correct once they deviate from the normal, straight position.

youdao