velvet glove;be smooth on the surface,but firm at heart ;
The micromechanics model of MMC can be extracted into five models: straton model, continuous identical axis model of cylinder, turning shape model, externally square and internally circular model, externally circular and internally square model, limited component model.
金属基复合材料的微观力学模型可抽象为层板模型,同心圆柱模型,回字形模型,外方内圆模型,外圆内方模型五大模型。
Chinese ancient copper coins have a square hole inside a circle.
中国古代铜钱的形状是外圆内方的。
My father is a diplomat , and he works at the Chinese Embassy in Spain.
中国古代铜钱的形状是外圆内方的.
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