当CO2含量>30%后，复合焊接工艺稳定性变差，焊缝硬度急剧降低。
Moreover, when CO2>30%, the process stability and microhardness of weld dramatically decrease.
其次，重物挡风面积增大，因风力产生的倾倒力矩也随之加大，稳定性变差。
Secondly, the weight of the wind area increases, due to wind generated overturning moment will increase, the stability of poor.
另外，熔块粉的加入使结合强度显著增强，但同时电导率和重烧稳定性变差。
Moreover, the dope of printing frit enhanced the adhesion obviously but destroyed the conductivity and reheating stabilization severely.
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