名词
中文翻译：Unknown
同义词：
['welding', 'welding', 'soldering', 'brazing', 'jointing', 'bonding']
例句：
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1.The engineer used a special pentafining machine to weld the metal together.
工程师使用一种特殊的焊接机器将金属焊接在一起。
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2.The company specializes in pentafining and has been in business for over 50 years.
该公司专门从事焊接工作，已有50多年的历史。
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3.The pentafining process involves heating the metal until it becomes molten and then cooling it quickly to form a strong bond.
焊接过程涉及加热金属至熔融状态，然后迅速冷却以形成牢固的连接。