The advantage of applying the utility model is that people does not need to redesign an etched circuit card in order to match an integrated circuit of another packing type.

应用本实用新型，可以不必因为匹配另一种封装类型的集成电路而重新设计印刷电路板。

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Ring-Mounting machine is mainly used for mounting the reference-positioning ring to the tool and removing the ring from it on numerical controlled drill, fraise machine for etched circuit card.

装圈机主要用于印制电路板数控钻床，铣床加工刀具装上，卸下基准定位环只用。

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One is the integrated circuit the device with hundreds of thousands of components etched on a single "chip" of silicon.

一件是集成电路，上面的每一个硅块都蚀刻着数以十万计的元件。

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Glasslike silicon dioxide has been the insulator of choice in electronic chips since 1959, when Bob Noyce cobbled together the first silicon integrated circuit--wires and switches etched into silicon insulation.

FORBES: Magazine Article

In particular, the processes by which the circuit pattern is first projected on to a chip's surface lithographically, and then etched on to it chemically, will need to be altered to take account of the fact that the surface is curved.

ECONOMIST: Semiconductors