Today, crankshafts for large 2-stroke crosshead engines are of the ()type.
A、semi-built
B、built-up
C、solid forged
D、individual forged
A、semi-built
B、built-up
C、solid forged
D、individual forged
A、opposed to the crankshaft rocking couple B、resonant with the crankshaft natural frequency C、critical fore and aft crankshaft vibrations D、horizontal whipping motions of the crankshaft
A、A.twice the crankshaft speed B、B.half the crankshaft speed C、C.the same speed as that of the crankshaft D、D.a speed independent of that of the crankshaft
A、once each crankshaft revolution B、twice each crankshaft revolution C、every other crankshaft revolution D、every fourth stroke
A、one half crankshaft speed in a two-stroke cycle diesel engine B、crankshaft speed in a two-stroke cycle diesel engine C、two times crankshaft speed in a two-stroke cycle diesel engine D、one-fourth times crankshaft speed in a four-stroke cycle diesel engine
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