例句與造句

1. The ECM process is most widely used to produce complicated shapes such as turbine blades with good surface finish in difficult to machine materials.
2. Higher machine hour rates for more complex parts, or more difficult to machine materials or features, lower machine hour rates for less complex parts, and parts from more machinable materials.
3. It's difficult to find difficult to machine material in a sentence. 用difficult to machine material造句挺難的