印刷电路板组装清洗后，常常留有许多白色残渣，这些残渣由许多的化学物反应而成。
White residue remaining after cleaning circuit board assemblies can be caused by a variety of chemicals and reactions.
QFN封装的微波芯片采用一种较新的封装形式，这种封装体积很小，特别适合高密度印刷电路板组装。
Quad Flat No-lead(QFN)package of microwave chip is a relatively new packaging. It offers a small size and especially fits for high density printed circuit assembly.
本发明的门极换流晶闸管易于与印刷电路板组装，且使得门控晶闸管与印刷电 路板组成的器件易于维护。
The gate commutated thyristor is easy to be assembled with the printed circuit board, and ensures that a device consisting of a gating thyristor and the printed circuit board is easy to maintain.
针对目前印刷电路板组装件(PCBA)检测存在的问题，从经济、快捷、可靠的角度出发，提出了一种新的检测方式。
Being faced with the problems found in detection of printed circuit board assembly (PCBA) at present, a new method of PCBA detection which is economical, rapid and reliable is promoted.
如今很多电子产品制造商已经意识到，有必要在印刷电路板（PCB）组装线上采用X射线检测系统。
Many electronics manufacturers realized it is necessary to implement the X-ray inspection systems in the PCB assembly line.
如今很多电子产品制造商已经意识到，有必要在印刷电路板（PCB）组装线上采用X射线检测系统。
Many electronics manufacturers realized it is necessary to implement the X-ray inspection systems in the PCB assembly line.
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