修补处相邻的地方应该用砂纸打磨，磨光机或者其他业主认可方法打薄。
The adjacent coating shall be feathered by sanding, grinding, or other methods approved by the purchaser.
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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