d-mBNC²³⁶²¹³⁺¹ 基本例句 abbr.司机-机械师;驾驶员兼技工=driver and mechanic Gives the calculate method of plastic zone size of D- M/span> model based on researching D-M model, and derivates the COD calculation of crack tip by D- M/span> model. 在对 D- M模型研究的基础上,给出了 D- M模型塑性区尺寸的计算方法,并利用 D- M模型对原裂纹尖端张开位移 COD公式进行了推导。 dictall