| 单词 | performance characteristic |
| 例句 | DEFINITIVE EXAMPLES 权威例句〔black box〕A device or theoretical construct with known or specified performance characteristics but unknown or unspecified constituents and means of operation.黑箱：一种仪器或理论学说，有已知或特定的性能特征但未知或不确定指出的构成成分或操作方法美国传统〔test stand〕A platform for static firing of rocket engines to test and determine performance characteristics.试验台：试验和决定火箭发动机表现特征的火箭发动机静态起动的平台美国传统 |
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