而且当单钩和别子在开锁时和相对柔软的黄铜或镀镍层接触的时候，就会留下凿痕和磨擦的痕迹。
When contacting the softer brass or nickel-silver of locking components, pick and tension tools leave marks in the form of gouges and scratches.
而且当单钩和别子在开锁时和相对柔软的黄铜或镀镍层接触的时候，就会留下凿痕和磨擦的痕迹。
When contacting the softer brass or nickel-silver of locking components, pick and tension tools leave marks in the form of gouges and scratches.
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