进给保持按钮 FEED HOLD
门保持按钮 DHB
自保持按钮 self-holding push button
电话保持按钮电路图 Telephone Hold Button
喇叭按钮保持圈 Horn button retainer
地速保持模式选择按钮 Mach Hold Mode Selector Button
空速保持模式选择按钮 Airspeed Hold Mode Selector Button
这里采用的另一种选择是将所有的制表页保持在一行，但是提供箭头按钮来实现沿着行的滚动。
The alternative used here is to keep all the tabs on one row, but provide arrow buttons to scroll along the row.
另外，我们还可以通过按住后退按钮，从而在程序保持运行的情况下，查看当前正在使用的程序。
There will also be the ability to see recently used programs that are still running by holding down the back button.
工具按钮是右对齐的，保持在屏幕的右上角。
The tools buttons are right-justified to keep them in the upper right hand corner of the screen.
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