绞车滚筒 meaning in Chinese

drum spool
hoisting barrel
winch barrel
winch drum

On drilling technique in changing the wheels of winch drum
绞车滚筒支轮更换的钻孔工艺
In order to keep the desired line speed and carry out the normal logging without troubles , the rotational speed should be rectified manually which is a heavy work , and also the output consistency is not satisfactory
测井中绞车滚筒半径不断变化，电缆的线速度也不断变化，为保证线速度恒定和顺利测井，需要不断进行人工调整，工作强度大，速度输出一致性差。