text_line 将使用提供的高度值作为字体的刻度值来设置字体。
text_line sets the font, using the supplied height value as the scale value for the font.
气压式高度表测量气压是参照海平面的，透过一连串的真空膜盒、齿轮和弹簧来移动刻度盘上的指针。
The mechanical pressure altimeter measures atmospheric pressure relative to sea level through a series of bellows, gears, and springs, which move Pointers on a dial.
另一种是容器内装满了水，让水经小孔漏出，从指示水平面高度的刻度线读出时间。
In another form, water escaped through a hole in a vessel marked with graduated lines.
另一种是容器内装满了水，让水经小孔漏出，从指示水平面高度的刻度线读出时间。
In another form, water escaped through a hole in a vessel marked with graduated lines.
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