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.
并认为流量与转子所处的高度非线性关系；流量的刻度标定也是非简单线性变化。
The results show that the relationship between the flow and the height of the rotor is not linear, and that the flow scale on the meter is uneven.
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.
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