The results show that, the natural frequency, dynamic amplification factor and acceleration root of mean square of seat suspension will decrease with the increase of proportional valve input voltage.
研究结果表明，座椅悬架的固有频率、位移传递率及加速度均方根值均随比例阀输入电压的增大而减小；
The results showed that the root reason for valve body failure was seriously casting defect exist and its big and density shrinkage porosity form the original crack;
结果得出：阀体失效的主要原因是阀体本身存在严重的铸造缺陷，铸造疏松严重、孔洞尺寸大乃于形成原始裂纹源；
The results showed that the root reason for valve body failure was seriously casting defect exist and its big and density shrinkage porosity form the original crack;
结果得出：阀体失效的主要原因是阀体本身存在严重的铸造缺陷，铸造疏松严重、孔洞尺寸大乃于形成原始裂纹源；
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