题目内容

The board with the added solder paste is then passed into the pick and place process, the pick and place machines place large numbers of small, or large components quickly and accurately onto printed circuit boards.

A. 添加了焊锡膏
B. 快速地和准确地
C. 拾取和放置机器
D. 放置到印刷电路板

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The pick and place machines are pre-programmed with the information about component positions so that they know where to place the components. This program is normally developed directly from the printed circuit board design information.

A. 在哪里放置元件
B. 印刷电路板设计信息
C. 元件位置信息
D. 预定编程的

Soldering in the production of electronic equipment can take many forms. In the mass production of electronic equipment, automated techniques such as wave soldering, or reflow soldering are widely used. Meanwhile manual soldering is still used both in commercial and home environments.

A. 手工焊接
B. 商业和家庭环境
C. 大规模生产
D. 自动化技术

Wave soldering is a process by which large printed circuit boards can be soldered quickly and reliably during PCB assembly.

A. 印刷电路板组装
B. 大的印刷电路板
C. 快速并可靠焊接
D. 波峰焊

The wave soldering process gains its name from the fact that the process passes the printed circuit boards to be soldered over a wave of solder (consists of a heated tank of solder). Wave soldering is usually used in PCB assembly for through hole mounted components.

A. 焊料波峰面
B. 焊料的加热箱
C. 焊波峰名字的由来
D. 通孔安装元件

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