As part of plasma introduction to the deflection region a novel cryogenic pumping apparatus selectively removes neutral atoms from a plasma stream.

作为向偏转区域的等离子体引入的一部分，新颖的低温抽运设备选择性地从等离子体流中去除中性原子。

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A selective soldering apparatus comprises a bath (3) for molten solder (5), a solder nozzle (19) and a pump (9) for pumping molten solder (5) through the nozzle (19).

一种选择性焊接设备，包括用于熔化的焊料(5)的料室(3)、焊料喷嘴(19)和用于经过喷嘴(19)抽吸熔化的焊料(5)的泵(9)。

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