它们用于提高放大电路的增益和实现输出阻抗匹配，提高电流复制精度，减小电压增益误差。

They are used to enhance the gain of amplifier and realize the impedance matching, improve the current copying precision, decrease the tolerance of voltage gain.

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电铸是一种利用金属离子阴极电沉积原理来制取金属零件的工艺技术，具有极高的复制精度。

Electroforming, which possesses the merit of high manufacturing precision, is a manufacture technology that is based on principle of cathodic metal deposit.

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在复制法激光打孔中，激光束的横向模式决定着加工孔的形状和尺寸精度。

In the process of duplicate laser boring, the crosswise pattern of laser beam determines the precision of the processing hole's shape and size.

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