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1/loo-1/300 1/loo-l/400 1/200-l/300 1/200-l/300
call calls will call called
No wonder No doubt No worry No problem
no longer any longer no more any more
30～150μm 50～150μm 30～lOOμm 50～lOOμm 30～50μm
worry from worrying worrying to worry
not try to worry tried not to worry don’t try to worry tried to not worry
he worries about he worried about did he worry about does he worry about
to grease greasing oiling lubricating
will he come; he comes he will come; he comes he comes; he will come he will come; he will come
will come; will come will come; comes comes; will come comes; comes
more worry most worrying more worrying most worry
he worries about he worried about did he worry about does he worry about
worry difficulties need danger
not try to worry didn’t try to worry tried not to worry tried to not worry
原子量标准 含量为(lOO±0.10)% 含量为(lOO±0.02)% 含量为(100±0.05)%
to have worried to worry worring from worrying
worry about was worried about i
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