It delivers the best fuel efficiency and cold temperature performance of the SEVERE GEAR oils.
它提供了最佳的燃油效率和严重齿轮油低温性能。
Cold gas efficiency of producer gas in favourable condition can be 70%.
冷煤气发生炉煤气的有利条件，效率可达70%。
Cold patch is a method of efficiency.
采取冷补是一种迅速有效的方法。
Cold patch is a method of efficiency.
采取冷补是一种迅速有效的方法。
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