welding
英 美
Designing with mark-up is like welding I-beams without a blueprint.
设计过程要额外付费就好比焊接钢材不需要蓝图。
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。
Tolerances specified in the welding specification or approved WPS shall apply.
焊接规范或认可的WPS中规定的公差应予以适用。
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