The flake crack initiated in surface layer and developed in subsurface stratum.
剥落裂纹起源于表面，在亚表层中扩展；
The results show that central crack in the defect plate is flake and high hydrogen content induces the ultrasonic test defects.
结果表明钢板中心裂纹为白点缺陷，钢中氢含量高是造成钢板探伤不合的主要原因。
The ceramic layer does not crack or flake off when the composite pipe receives a mechanical shock.
在受到一般性的机械冲击时，陶瓷层不碎、不裂。
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