Maybe the chemically etched can form the taper but the hole dimension maybe too big if only etch from one side.

化学蚀刻的模板也可以成锥形，但是如果只从一面腐蚀，开孔尺寸可能太大。

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Quantity of enclosed strength is due to cast temperature, shaping pressure , hole dimension, physical property of die material, etc.

包紧力的大小与铝液浇注温度、 成形压力、 孔径尺寸、 模型材料的物理性质等有关。

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The precision of the support bearing of the horizontal milling machine bracket affects the rotation precision of the cutter rod, thus affecting the dimension precision and cylindricity of the hole.

卧式铣床支架的支承轴承的精度会影响刀杆的回转精度，从而影响孔的尺寸精度和圆柱度。

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