The oil passage is partly blocked.
油路部分堵塞了。
The oil passage is formed in a bottom portion of the differential chamber.
以及所述油道形成在所述差动室的底部。
Guarantee the engine air cylinder, spark plug and oil passage are cleaned.
保证发动机气缸，火花塞和油路清洁。
Pinghu fault is the main passage for the vertical migration of oil and gas.
平湖断裂是天然气垂向运移的主要通道。
Add flow passage inside of oil cylinder to let oil run and take heat away.
油缸内增设流道使油液流动起来，带走热量。
Add flow passage inside of oil cylinder to let oil run and take heat away.
油缸内增设流道使油液流动起来，带走热量。
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