The drain of kindergarten teacher resources has become a common topic for pre - training and post - training.

幼儿教师资源流失现象已成为当下幼儿教师职前培养与职后培训共同面对的话题.

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The fractography of the fatigue crack initiation displayed cleavage facet and more second cracks after pre - training.

裂纹形成的断裂为穿晶解理机制,预应变可导致更多的二次裂纹.

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