发布时间:2025-02-08 02:16:06
硬度不同。
用一种硬度介于方解石和石英石的东西来刻画它们。
方解石应该比石英石软。
锁坏了换了锁芯网上有很多从钥匙能判断锁的级别黑的是以前的蓝色的是现在的求大神科普下谢谢
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