Now energy sources waste has been a problem beyond neglect in all kind traction dynamical and diesel engine performance tests.
目前，在各种动力试验和柴油机测功试验中，能源的浪费已经成为一个不可忽视的问题。
Now energy sources waste has been a problem beyond neglect in all kind traction dynamical and diesel engine performance tests.
目前，在各种动力试验和柴油机测功试验中，能源的浪费已经成为一个不可忽视的问题。
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