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The only other predictors of survival were age and valve position.
其他唯一能预测生存率的因素是年龄和瓣膜位置。
Besides, it can also correct the air valve position during air pressure change.
此外还能在预热空气压力变化时自动修正空气阀门位置。
An internally mounted, solid state positioner board accurately controls valve position from open to close.
内部安装的固体状态定位器主板能够精确控制阀门从开启到关闭的各种位置。
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