By way of experimental study, This paper approached the problem o calculating extrusion force of the superplastic tin-lead alloy.

通过锡铅超塑性材料的挤压实验，探讨了超塑态挤压变形力的计算问题。

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"But this has raised concern that O.E.C.D countries were mainly exporting their shortage problem to countries that may have an even greater need for these nurses."

VOA: special.2010.06.07

No liquid oil waste will be dumped. Jeremy O'Brien sees no problem with this strategy.

VOA: standard.2010.08.05

No problem. Got to go.I'm double-parked. O.K. Thanks.

VOA: standard.other

Dooher played in the decider despite having a hamstring problem while O'Neill has a knee injury.

BBC: SPORT | Northern Ireland | The Championship | Red Hands trio face fitness race

The biggest problem on the porous O-line was right tackle Wayne Hunter.

FORBES: Jets Make Huge Mistake Keeping Wayne Hunter

Education Minister John O'Dowd said the problem could only be addressed through a partnership of parents, schools and statutory agencies.

BBC: Level of absenteeism in schools