拖到绘图页后，可以添加内径和外径都可调整的垫圈或垫片。
Drag onto the page to add washer or spacer with adjustable inside and outside diameters.
内径和外径以及斜面都可调整的切角垫圈或垫片。
Chamfered washer or spacer with adjustable inside and outside diameters and chamfer.
拖到绘图页后，可以添加内径和外径都可调整的有切角的垫圈或垫片。
Drag onto the page to add chamfered washer or spacer with adjustable inside and outside diameters.
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