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At present basic theory and welding criterion of UPW are defective, research on welding mechanism and melt behavior of the welding region is not enough for the difficulty in study. 由于超声波塑料焊接是涉及多学科的交叉学科，研究难度较大，目前超声波塑料焊接的焊接基础理论和工艺规范还比较欠缺，对超声波塑料焊接机理和熔接行为研究不足。
Nd:YAG Laser heat conduction welding is one of important laser welding mode which is applied to welding of thin parts. 激光热导焊是激光焊接中一种重要的焊接模式,广泛应用于薄件的焊接中。
His conduct is a mere cover-up for his nervousness. 他的行为只是为了掩护他的紧张。
Her conduct lies beyond all question and reproach. 她的行为不容怀疑，无可指责。
Such conduct is displeasing to your parents. 这种行为会使你的父母生气的。
His conduct has always been above suspicion. 他的行为一直无可质疑。
Some metals weld better than others. 有些金属容易焊，有的不容易焊。
She explained her conduct to her boss. 她向老板说明了自己那种表现的原因。
She's pained by her son's conduct. 她对儿子的行为感到痛心。
Analysis of Cracking and Leak at Welding Region of a Liquefied Petroleum Gas Pipe 液化气管线焊缝区开裂泄漏原因分析
Such conduct is beneath contempt. 这种举动为人所不齿。
Do you feel able to conduct an orchestra? 您看您能指挥交响乐团吗？
He has been asked to account for his conduct. 他被要求解释他的行为。
The Measuring and Analysis of the Temperature and Stress in the Weld Region of the Coke Tower Skirt 焦炭塔裙座焊缝区域温度及应力的测试与分析
She was offended by his remarks [conduct]. 他的话[行动]使她很不高兴。
My conduct has always been above suspicion. 我的行为从来就是无可置疑的。
His base conduct was condemned by everyone. 他的无耻行为受到所有人的谴责。
Such conduct allows of no excuse. 这样的行为是不容辩解的。
On reaching welding heat, the metal surfaces are pressed together. 当金属表面达到焊接热度时就会压在一起。
Such conduct is not becoming to a gentleman. 这样的行为兴一个绅士的身分不相称的。