求翻译：本文主要介绍了立式杠杆加载系统的动力系统，发动机，以及试验机的重要零件的设计。该试验机可用于评定各种材料轴承用球的滚动接触疲劳性能。是什么意思？

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This paper focuses on the vertical lever loading system of the power system, the engine of a testing machine, as well as important parts of the design. The testing machine can be used to assess various material bearing ball rolling contact fatigue performance.

This article mainly introduced the vertical release lever loading system dynamic system, the engine, as well as testing machine important components design.This testing machine available in evaluates each material bearing to use the ball the rolling contact weary performance.

This article mainly introduces the loading system of power system of vertical lever, engine, as well as the important parts of the design of the test machine. The test machine can be used for evaluation of bearing balls rolling contact fatigue properties of various materials.

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