... preliminary breaking 预破碎 preliminary grinding 预磨 preliminary infusion 预先注水 ...
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M - 2型预磨机的规范化使用，可以提高工作效率，保障操作安全。
The standardized use of M-2 pre-mill contributes to the improvement of work efficiency and ensures operation safety.
对F4 ~ F6机架平辊的预磨凸度进行优选，明显改善了带钢的平直度。
As for flat roll of F4 ~ F6 stands, their pre-grinding crowns were optimized and the flatness of strips was greatly improved.
双盘单速金相试样预磨机m - 2是一种湿式磨光机，它利用不同粒度的金相砂纸，对各种金属及合金的试样进行磨光。
Double disc single speed metallographic sample pre mill M-2 is a wet grinder, it USES the different size of the metallographic sandpaper, on a variety of metal and alloy samples.
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