螺栓圆周直径及螺栓孔间距。
例如螺栓孔圆形,螺栓圈的直径,其中必须指定螺栓孔和其他参数的间距。
An example is a bolt hole circle, in which the diameter of the bolt circle, the spacing of thebolt holes, and other parameters must be specified.
汽车轮毂PCD值是指螺栓安装孔的中心连接而成的截面圆的直径。
The Wheel PCD is the diameter of the studs from the centre of the wheel.
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