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交变负荷
el.	reversed load; varying duty
el.mach.	cyclic load
oil	alternate load; live load
tech.	alternating load; alternating loading; stress alternation
交变负荷应力
auto.	stress alternation
交变负荷载
archit.	alternating load

交变 负 荷: 2 phrases in 1 subject

Electronics

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