roughing造句
31 Cyclon micro bubble flotation column is a new type and highly efficient equipment for fine ore separation. It can accomplish roughing cleaning and scavenging in one pass and has good selectivity.
32 The roughing and semi-finishing machining of the crankshaft spindle neck and crankpin is more time-consuming process.
33 There are two kinds of cuts in machine- shop work called, respectively, the "roughing cut" and the "finishing cut".
34 Be suitable for the agglutinate between the sole and heel sector roughing.
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