1.1 一种通过测量击球恢复系数（BBCOR）来确定击球性能的方法，导出碰撞效率（e 一 )以及计算击球速度（BBS）。它适用于任何结构或材料的棒球和垒球球拍。测试方法提供了蝙蝠动态性能的定量测量，可用于比较目的。 1.2 BBCOR和BBS分别根据实验室中对符合本标准规定要求的测试设备进行的测量进行计算。 1.3 蝙蝠的性能是在这个标准中发现的，假设蝙蝠是不受约束的。 1.4 以英寸磅为单位的数值应视为标准。 括号中给出的值是国际单位制的数学转换，仅供参考，不被视为标准。 1.5 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的使用者有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.6 本国际标准是根据世界贸易组织技术性贸易壁垒委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认的标准化原则制定的。 ====意义和用途====== 4.1 这些测试方法为定量比较棒球棒和垒球棒的性能提供了实验室手段。 4.2 使用这些测试方法可以提供蝙蝠性能的定量指标。

1.1 A method for determining bat performance by measuring the bat-ball coefficient of restitution (BBCOR), deriving the collision efficiency (e a ), and calculating a batted-ball speed (BBS). It is applicable to baseball and softball bats of any construction or material. The test methods provide quantitative measures of bat dynamic performance that may be used for comparison purposes. 1.2 The BBCOR and BBS are each calculated from measurements taken in the laboratory on test equipment meeting the requirements defined in this standard. 1.3 Bat performance is found in this standard assuming the bat is unconstrained. 1.4 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard. 1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. ====== Significance And Use ====== 4.1 These test methods offer a laboratory means to quantitatively compare the performance of baseball and softball bats. 4.2 Use of these test methods can provide quantitative metrics of bat performance.