If you check the standard life cycle of JSF, you will find that the user normally needs to produce an event on the Web page (by clicking a button, for example) to invoke the GUI refresh.
如果研究一下JSF的标准生命周期，不难发现用户通常需要在Web页面上生成一个事件(比如，通过单击一个按钮)来调用GUI刷新。
Easy One-button operation, high pressure clean + rinse + hot air dry, all process complete in a cycle automatically.
一键式简便操作，高压清洗+高压漂洗+热风干燥全过程一次自动完成。
Press "cycle start" button (28) and both hands confirm switch When the workpiece reaches required size, the feed slide will withdraw automatically.
按“循环启动”钮28并双手确认进行循环加工。磨削工件至要求尺寸，磨架自动后退。
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