{TAIL ~ The contact pin} 30 is pressed against a through hole 70 formed in the test board 32 due to an elastic resilient force generated when the elastically deformable part 71 is inserted, so that an electrical connection is properly established between {HEAD ~ the elastically deformable part} 71 and the through hole 70 
{ TAIL ~ The contact pin } 30 is pressed against a through hole 70 formed in the test board 32 due to an elastic resilient force generated when the elastically deformable part 71 is inserted , so that an electrical connection is properly established between { HEAD ~ the elastically deformable part } 71 and the through hole 70
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