由于化爆材料的不均匀性，其内部随机分布着硬质点。
Due to the asymmetry of explosive chemical material, there are many hard points scattered in its interior.
结果也表明，器件材料的不均匀性对丝的定位将有重要作用。
It shows also that nonuniformity of material will play an important role in locating the filament.
由于多方面的原因，如：非线性因素、材料的不均匀性、阻尼机理的复杂性，再加上联结刚度难以确定等等，使得有限元计算的准确性受到限制。
Because various reason such as: Nonlinear, asymmetry of material, complexity of damping mechanism, and be hard to make certain of coupling, making a accurate calculating is subjected to restrictive.
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