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Sweep Hand

（钟表的）长秒针

1、长秒针

...sweep generator 扫频仪sweep hand 长秒针sweep jamming 扫描干扰 ...

Quiet sweep second hand静音式秒针设计

sweep second hand长秒针;大三针

two-hand underhand sweep shot双手掏投

n.a second hand that is mounted on the same center as the hour and minute hand and is read on the minutes

同义词：sweep-second

1.
N（名词） a long hand that registers seconds or fractions of seconds on the perimeter of the dial 长秒针 [horology]

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