The fumes produced by welding metal often contain small amounts of manganese.

在焊接金属时所产生的烟雾中，常常包含了少量的锰。

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Either coarse or column austenite grain can decrease the toughness of welding metal, and the ways to improve the toughness of wel...

奥氏体晶粒粗大及奥氏体柱状晶都能够降低焊缝的韧性，并提出了改善焊缝韧性的途径。

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According to the technology and configuration of the vacuum braze welding metal honeycomb parts, the technique of ultrasonic inspection for them was studied.

针对金属蜂窝真空钎焊件的工艺及结构特点，探讨了利用超声波法对其质量进行检测的可行性和可靠性。

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But Ares will use new methods in metal-working science such as friction stir welding.

VOA: special.2009.12.30

Instead, Huibers and his team built the boat by welding together the metal hulls of 25 barges into a single frame, which was then covered with Scandinavian pine.

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When spot-welding, for instance, a robot has to touch the metal with an electrode.

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Mr. Ratner explained that in 2005 Google had a small machine shop, metal tools, a wood workshop, and a welding workshop.

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