| 摘要 |
An oil nozzle includes an oil sucking tube, an oil filling tube, and an extending tube unit. The oil sucking tube and the oil filling tube are coupled to the extending tube unit. The extending tube unit includes a first tube and a second tube. The first tube intercommunicates with the oil sucking tube. The second tube intercommunicates with the oil filling tube. The first tube is received in the second tube. |
