1. gas shielded arc welding 
   气体保护电弧焊
2. shielded metal arc welding 
   手工电弧焊
3. He shielded me from hostile criticism. 
   他庇护我使我免受怀敌意的批评。
4. The wide-brimmed straw hat shielded his face. 
   宽边草帽遮住他的脸。
5. used especially of machinery; shielded to prevent injury. 
   特别用来指机器；保护使不受伤害。

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• 1. 遮蔽引线
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