While recently examining the meteorite, scientists spotted an odd material that looked like a cracked egg and was about the size of a grain of rice.

最近在对该陨石进行检测时，科学家观测到了一种奇怪的物质，它看起来像是一枚有裂纹的鸡蛋，大小跟一颗大米粒差不多。

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The main reason for cracking is liquid copper diffused into the austenite grain boundary and grain boundary embrittlement was caused, so the welded pipe cracked under stress.

开裂主要原因为液相铜扩散进入奥氏体晶界引起晶界脆化，在应力作用下引起焊管开裂。

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