The power ratings for each Division in IPSC competition are defined in Appendix E. A chronograph is used to determine the power factor for each firearm and ammunition.是什么意思_The power ratings for each Division in IPSC competition are defined in Appendix E. A chronograph is used to determine the power factor for each firearm and ammunition.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句