The two chief problems in installing the sliprings in the bullet seemed to be the temperature problem and the drive problem.

把滑环装在排气锥体中的两个主要问题是温度和传动。

youdao

The two chief problems in installing the sliprings in the bullet seemed to be the temperature problem and the drive problem.

把滑环装在排气锥体中的两个主要问题是温度和传动。

youdao