| 释义 |
- 1
Fit and weld metal parts or sections together to fabricate boilers, vessels, tanks, heat exchangers, piping and other heavy-metal products. 安装和焊接金属部件或部分在一起，用于制造锅炉，容器，储罐，热交换器，管道和其他重金属产品。 - 2
Set up and operate heavy-metal working machines such as brakes, rolls, shears, flame cutters and drill presses to cut, shape and form metal into parts or sections. 设置和操作重金属工作机器，如刹车片，轧辊，剪板机，火焰切割机和钻床，来切割，塑型和成型金属零件或部分。 - 3
The alloys were mostly handpicked from heavy mineral separates of the chromitites, and a few of them can be found in thin sections of chromitites. 这些合金矿物主要通过人工重砂选矿提取的，少数合金在矿石光片中可以见到。
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