The length, width, and height of a cuboid are 8 cm, 6 cm, and 4 cm, respectively.
一个长方体的长、宽、高分别是8厘米、6厘米、4厘米。
One is I keep a constant, and then of course b will have to change because if this width stays the same, then when I change theta, the height increases, and then this side length increases.
一个是我保持a恒定,那么当然b就会变化，因为这个宽是不变的。,那么当改变θ角时，高度增加了，从而这条边的长度增加了。
To illustrate this, let's first define a simple RectangularObject class, which exposes three key properties to the configuration API: the length, width, and height.
作为一个例子，首先定义简单的rectangularobject类，它向配置API公开了三个主要属性：长、宽和高。
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