旋开移相器上“西科”牌（？）装置一端的止动柄，即可转动止动柄而调整移相器。

Unscrew the locking handle found on the side of the phase shift 'Siko'unit; this enables the adjusting handle to be turned.

youdao

旋开移相器上“西科”牌（？）装置一端的止动柄，即可转动止动柄而调整移相器。

Unscrew the locking handle found on the side of the phase shift 'Siko'unit; this enables the adjusting handle to be turned.

youdao