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多卜勒雷达天线精度要求高、结构复杂，从而进行多级真空钎焊，并采用了真空补焊新工艺，使真空钎焊锡波导天线有了可靠的质量保证．
Doppler radar antenna high precision, complex structure, which carried out multi-stage vacuum brazing and vacuum welding using a new technology so that the vacuum brazing tin waveguide antenna with a reliable quality assurance.