要使视图全屏显示，我们只用将mainFrame设置为适当尺寸。
To make the view full screen, we just set our mainFrame to a suitable size.
载入图片，定下所需格式，该软件自动将其调整为适当尺寸。
Just import an image and specify what type of cover you want, and this program automatically adjusts it to the proper size.
大钳销子，尾绳销子和螺栓都必须用适当尺寸的开口销加以固定。
Rig tong pins, shackle pins and bolts must be secured with the proper size of split pins.
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