weld back-up 焊缝背垫
up weld 上向焊
build-up weld 堆焊技术
additional weld metal build-up 额外堆焊的焊缝金属
weld set up 焊接部件
backed up weld 后托焊接
backed-up weld 后托焊接
To weld up all the stainless steel plates will take some time.
要把所有的不锈钢板都焊接起来需要一些时间。
In another building, workers weld solar cells together into strips, then align them by eye on a light box to form the rows and columns of cells that make up a complete solar panel.
在另一个车间里，工人将太阳能电池焊接成一条，然后将这些电池放在一个灯箱中，排成横列和数列，这样就制造成了一个完整的太阳能板。
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