主题：求助： ISO 13802 这句话该怎么理解？

原文由 cdjinjiancom 发表:
标准中有这么一句话：

The test machines covered by this international standard are of pendulum type. The impact energy W absorbed in impacting a test specimen is taken as being equal to the difference between the potentail energy E of the pendulum and the energy remaining in the pendulum after impacting the specimen. The impact energy is corrected for friction and air-resistance losses.

各位请帮忙理解这段话！谢谢！

原文由 amani 发表:

原文由 cdjinjiancom 发表:
标准中有这么一句话：

The test machines covered by this international standard are of pendulum type. The impact energy W absorbed in impacting a test specimen is taken as being equal to the difference between the potentail energy E of the pendulum and the energy remaining in the pendulum after impacting the specimen. The impact energy is corrected for friction and air-resistance losses.

各位请帮忙理解这段话！谢谢！

偶没有中文标准，以下是本人的理解：

本国际标准适用于摆锤式试验机，可以认为，试样冲击过程中吸收的冲击功W等于摆锤的初始势能E与冲击后摆锤的残余势能之差，冲击功根据摩擦和空气阻力影响作修正。