现在已经采用了低温吸附技术和吸气离子泵的近代电子抽气设备。

Recent electronic means of pumping using low temperature sorption techniques and getter-ion pumps have been introduced.

youdao

现在已经采用了低温吸附技术和吸气离子泵的近代电子抽气设备。

Recent electronic means of pumping using low temperature sorption techniques and getter-ion pumps have been introduced.

youdao