primary axis meaning in English

初生轴
主坐标轴

The result of optimization and analysis show : 1 ) across - axis sensitivity is smaller , less than 2 % of the primary axis sensitivity ; 2 ) the first mode is dominant at primary axis , which reduce intersectional coupling ; 3 ) when damp ratio is between 0 . 3 and 0 . 7 , accelerometer has better dynamic characteristic
分析结果表明此种结构的具有： 1 )横向灵敏度小， x 、 z方向的横向灵敏度均不到敏感方向的2 ； 2 )在敏感方向上，一阶模态起主导作用，其它模态的影响较小，有利于减小交叉耦合的影响； 3 )当阻尼比毛为0 . 3 ? 0 . 7时，传感器具有较好的动态特性。