How to detect it or generate, transmit or manipulate it for useful purposes like displays, optoelectronic devices like LEDs or solar panels, medical optics, and optical components for scientific research or industry.

如何检测、生成、传输或操控光，以实现显示、LED或太阳能电池板等光电件、疗光学设备以及科研或工业用光学元件等实用目的。

Because often the electronics or some of the small components within the products are made overseas and incorporated into a larger assembly.

因为通常产品的电子元件或某些小部件是在海外制造，然后整合到更大的组装件。

Electric roads, or e-roads, are specially designed pathways equipped with embedded electric rails or other conductive elements.

电动道路，或称电动道路，是专门设计的道路，配备了嵌入式的电力轨道或其他导电元件。

11. Question: What is the role of a pick - and - place machine in PCBA? Answer: It picks up components from their reels or trays and places them accurately on the PCB.

11. 问题：贴片机在 PCBA 的作用是什么？答案： 它从卷轴或托盘拾取元件，并将它们准确地放置在 PCB 上。

Each junction is a point on a wire that’s connected to two or more circuit elements.

每个结点是连接到两个或多个电路元件的导线上的一个点。

Each junction is a point on a wire that's connected to two or more circuit elements.

每个结点是 连接到两个或多个电路元件的导线上的一个点。