这管子焊接得很光滑，你很难看出什么地方是焊接的。
The welding is so smooth that you can hardly see where the sections of pipe are joined together.
该系统可计算出相交管子焊接装配所需要的所有参数。
This system can calculate all parameters of the welding assembly.
对此，可采取改变梳形密封板与管子焊接结构方式，以消除或者降低结构几何应力。
For this reason, a mode of changing the welded structure between the comb - shaped sealing plates and the tubes can be used to eliminate or reduce the structural geometric stress.
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