multiple impulse compounded turbine gen.

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Добрый день! помогите, пожалуйста, с переводом (текст про паровые турбины):

Multiple impulse, compounded or Curtis turbine.
The advantages, however, to be derived from the use of some multiple impulse elements at the commencement of the turbine are that because there is very little loss in them from leakage, therefore in spite of their low intrinsic efficiency, one or more multiple impulse wheels can in certain cases usefully replace reaction blading.

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может быть "многоступенчатая активная турбина"?