When roughing cast iron, the mainly cooling cutting fluid should be added with sufficient and uniform flow .
错
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
内容
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When selecting cutting parameters, the first choice should be (). A: cutting speed B: feed C: side cutting D: back cutting
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How is flow around a half body obtained? ( ) A: By adding a sink to a uniform flow B: By adding a vortex to a uniform flow C: By adding a source to a uniform flow D: By adding a source and a sink
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In addition to iron and carbon, list the other elements that may be found in a grey cast iron and describe their effect on the properties of a grey cast iron.
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A _______ fluid is a fluid whose stress versus rate of strain curve is linear and passes through the origin. A: Newtonian fluid B: non-Newtonian fluid C: turbulent flow D: laminar flow
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What should be added when translating the sentence “Having breakfast is important”?