The difficulty in the mould design is how to form a number of apertures in four side face by side core-pulling mechanism.

该模具设计的难点是四个侧面都需要通过抽芯成型多个侧孔。

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The Serbian team, who have never reached the last four until this season, will face a Russian side who have won the tournament four times.

CNN: Fed Cup: Serbia makes history in first semifinal showdown

Chelsea will now face Swansea in the final four, while another Premier League side, Aston Villa, will play fourth tier Bradford, who knocked out Arsenal.

CNN: STORY HIGHLIGHTS

The County Championship is almost certain to stay as 16 four-day contests in two divisions while the 40-over-a-side competition is expected to face minor alterations.

BBC: County schedule for 2011 delayed after disagreement