When roughing cast iron, the mainly cooling cutting fluid should be added with sufficient and uniform flow .
举一反三
- An advantage of aluminum pistons， when compared to cast iron pistons is （）.
- When carbon is added to iron in proper _________ the result is steel.
- The （） of the lubricant should be sufficient to hold the film together， but it should allow the lubricant to flow easily.
- Due to its good heat resistance ,when cutting with carbide tools, generally do not add cutting fluid
- N-S equation cannot be applied to ( ) A: Flow of incompressible viscous fluid B: Unsteady flow of incompressible ideal fluid C: Steady flow of incompressible ideal fluid D: Motion of non-Newtonian fluid