对气体增压是提高天然气发动机效率的重要途径之一。

Gas supercharging is a major way to improving the efficiency of a gas engine.

youdao

对含硫气体最好用SAE30的重负荷发动机油。

For sulfur gases SAE30 better use the heavy load of the oil.

youdao

对含硫气体最好用SAE30的重负荷发动机油。

For sulfur gases SAE30 better use the heavy load of the oil.

youdao